Index Catalog // ScholarsArchive@OSU

Xanthohumol derivatives improve insulin sensitivity in obese mice

Creator:: Hay, Joshua
Abstract:: Metabolic syndrome, characterized by a collection of risk factors including abdominal obesity, insulin insensitivity, elevated plasma triglycerides, hypertension and low plasma high-density lipoproteins (HDLs), is a major contributing factor to the development of cardiovascular diseases and type II diabetes (T2D). Xanthohumol (XN), a flavonoid isolated from Humulus lupulus cones, has...
Resource Type:: Presentation

Vegetative effects of RNAi-suppression of the poplar homolog of LEAFY in the field

Creator:: Jacobson, Jeremy
Abstract:: Due to public and regulatory restrictions, genetic containment technology is critical for research and development of transgenic trees in forestry. A multi-year field trial demonstrated that the RNAi-LFY construct successfully induces sexual sterility in 6K10 poplar (Populus alba) without visible effects on vegetative development. However, its limited number of replicates...
Resource Type:: Undergraduate Thesis and Presentation

Using Mass Spectrometry to Trace Polyphenols in Human Urine

Creator:: Carrillo, Crystal V.
Abstract:: Diet History Questionnaires (DHQ) can only provide general information about a person’s nutritional intake. It is unable to cluster groups of people based on diets or lifestyles, nor identify specific foods that may play a role in disease prevention. The aim of this study was to validate the use of...
Resource Type:: Presentation and Undergraduate Thesis

Using Acetylene as a Low-cost and Effective Methanogenesis Inhibitor in Single Chamber Microbial Electrolysis Cells

Creator:: Trujillo, Stephanie
Abstract:: Microbial electrolysis cells (MECs) for hydrogen production exhibit great advantages over many other biohydrogen production techniques in terms of versatility of substrate and hydrogen yield. However, hydrogen scavenging by methanogens put forward a great challenge to the application of the single chamber MECs when using mixed culture. Various strategies were...
Resource Type:: Presentation

Use of Platelet Rich Plasma for the Treatment of Subclinical Endometritis in Beef Heifers

Creator:: Puttman, Elizabeth A.
Abstract:: Postpartum uterine inflammation (endometritis) is not uncommon in beef cattle, resulting in infertility and culling. Prolonged calving may contribute to the increased incidence of endometritis in heifers. Commonly used methods to treat endometritis in beef cattle include intrauterine antibiotics and/or hormone injections, which can result in meat residues. Platelet rich...
Resource Type:: Presentation and Undergraduate Thesis

Urinary Lipid Biomarkers for Detecting Canine Transitional Cell Carcinoma Pilot Study

Creator:: Pope, George
Abstract:: Canine Transitional Cell Carcinoma (TCC) makes up 2% of all canine cancers and is the most common cancer of the bladder for dogs. Usually diagnosed in its later stages, TCC is difficult to treat, with low survival times. Current diagnosis involves invasive techniques, and mainstream screening tests are often ineffective....
Resource Type:: Undergraduate Thesis and Presentation

Urban Business Rodent Control Behavior and Attitudes Toward Rodents and Impact on Non-target Wildlife (Presentation), Urban business attitudes regarding rodents, rodent control methods, and impact on wildlife

Creator:: Arndt, Eva
Abstract:: Birds of prey and carnivorous mammals feed on small birds, rodents and other small mammals. Humans perceive many of the prey animals of these predators as well as the predators themselves, as “pests”, and seek to control them. Control methods for these unwanted pests, particularly rodents, have the potential to...
Resource Type:: Undergraduate Thesis and Presentation

United States Turtle Mapping Project with a Focus on Western Pond Turtle and Painted Turtle, United States Turtle Mapping Project with a Focus on the Western Pond Turtle (Actinemys marmorata) and the Painted Turtle (Chrysemys picta)

Creator:: Barela, Kimberly L.
Abstract:: We compiled Western Pond Turtle (Actinemys marmorata) and Painted Turtle (Chrysemys picta) locations in northwestern North America, consolidating data from multiple sources including nine U.S. State and Canadian Provincial jurisdictions. We assessed numbers of discrete locations, and analyzed distribution patterns temporally and spatially. Western Pond Turtle observation records ranged from...
Resource Type:: Undergraduate Thesis and Presentation

Understanding Regulatory DNA in Plants Through Molecular Cloning and Transient Transformation

Creator:: Juarez, Cesar
Abstract:: Gene expression in plants (and other eukaryotes) is a very complex process. Gene expression is primarily controlled by proteins and their binding sites near the gene in the chromosomal DNA. More specifically, interactions among transcription factors (DNA-binding proteins) and cis-regulatory modules (CRMs-sets of binding sites) control the expression of nearby...
Resource Type:: Undergraduate Thesis and Presentation

Toxicological Investigations of Two Poisonous Plants, Tansy Ragwort (Senecio jacobaea) and Summer Dandelion (Hypochaeris radicata) with Potential Therapeutic Agents, Quillaja and Milk Thistle

Creator:: Trejo, Elyssa A.
Abstract:: Stringhalt is a disorder in horses characterized by high stepping with hyperflexion of the hind limbs. This disorder has been reported from the US, Australia, Chile, and Brazil. In most instances, the disease manifests itself in horses exposed to summer dandelion (Hypochaeris radicata). Stringhalt has been induced by feeding summer...
Resource Type:: Undergraduate Thesis and Presentation

Toxicity and Mutagenicity of Polycyclic Aromatic Hydrocarbons in Contaminated Soils using Mammalian In Vitro Assay

Creator:: Luker, George W.
Abstract:: There exists a growing need to establish a better in vitro model for evaluating PAH toxicity and carcinogenicity and to improve assessments of risk to human health, especially to the complex mixtures that exist in the environment. Polycyclic aromatic hydrocarbons (PAHs) are ubiquitous environmental contaminants due to the incomplete combustion...
Resource Type:: Presentation

The Role of NhaP1, NhaP2, and NhaP3 Antiporters in the Acid Tolerance of Vibrio cholerae

Creator:: Gillon, Jacqueline and Schubiger, Carla
Abstract:: Vibrio cholerae (Vc), the etiological agent of cholera, has developed many mechanisms to combat the great fluctuations in pH, ion content and osmotic conditions of the vastly differing environments it encounters through its infections of the human host. A series of cation antiporters are found in the Vc membrane to...
Resource Type:: Undergraduate Thesis and Presentation

The Release of Nickel from Stainless Steel into Cooked Foods

Creator:: Kamerud, Kristin L.
Abstract:: Toxicological studies show that oral doses of nickel can cause allergic contact dermatitis, and routes of exposure, such as nickel leached from stainless steel cookware are not well characterized. In this study, four variables: grade of stainless steel, cook time, stainless steel seasoning or cooking cycles, and commercial tomato sauces,...
Resource Type:: Undergraduate Thesis and Presentation

The Effect of Sucrose on the Stability of Respiratory Syncytial Virus

Creator:: Redmond, Jillian
Abstract:: Respiratory Syncytial Virus (RSV) is a major concern in infants, the elderly, and immunocompromised individuals. There is currently no vaccine available. While it causes a significant number of hospitalizations and complications, RSV is a thermo labile virus and not very stable in the environment. This matter complicates the creation of...
Resource Type:: Undergraduate Thesis and Presentation

The Effect of Intracellular Zinc Concentration on Immune Activation and Proinflammatory Response in THP-1 Monocytes

Creator:: Rinaldi, Nicole A.
Abstract:: Zinc is an essential micronutrient required for many cellular functions, including the development and function of the immune system. The biological consequences of zinc deficiency illustrate the significance of zinc in human health. Zinc deficiency has been shown to cause the dysregulation of both innate and adaptive immune responses, as...
Resource Type:: Undergraduate Thesis and Presentation

Telomere Binding Protein Antagonists for Stem Cell Therapy

Creator:: VanGarde, Aurora
Abstract:: Understanding the mechanisms through which stem cells self-renew is important for the development of new therapies to repair and restore damaged tissue. This research explores possible mechanisms of telomere mimic action and seeks to validate a new assay for evaluating telomere binding antagonists and studying the effects of telomere binding...
Resource Type:: Undergraduate Thesis and Presentation

Targeting Chemotherapeutic Resistance through Bcl-2

Creator:: Avery, Jonathan, Pearce, Martin, and Kolluri, Siva
Abstract:: Access restricted, at author's request, until June 20, 2021 due to proprietary information.
Resource Type:: Presentation

Systematically evaluating the developmental toxicity of nanomaterials using the zebrafish model

Creator:: Edwards, Sabrina R.
Abstract:: As engineered nanomaterials (ENM) become more common in consumer products, it is crucial to rapidly assess toxicity of unique ENM. Previous studies rarely focused on standardizing nanotoxicity testing, leading to inconsistent and irreproducible results. This study characterized a variety of ENM of different size, shape, core type, and surface charge...
Resource Type:: Poster, Undergraduate Thesis, and Presentation

Serum Haptoglobin as an Indicator for Calving Difficulties and Postpartal Diseases in Transition Dairy Cows

Creator:: Sabedra, Dominique A.
Abstract:: Abstract Haptoglobin is an acute phase protein that is elevated in response to tissue damage and infections in dairy cows. The objectives of this study were to evaluate whether serum haptoglobin concentrations in the first week after calving can indicate disease status and severity, and whether haptoglobin concentrations are elevated...
Resource Type:: Undergraduate Thesis and Presentation

Relationship Between Winter Downwelling Conditions and Summer Hypoxia Severity Along the Oregon Coast

Creator:: Walters, Helen Marie
Abstract:: Hypoxia is a naturally occurring phenomenon that happens seasonally off the Oregon coast. As a consequence, there has been a great deal of research focused around analyzing the strength and duration of the hypoxic event during the summer season. This paper, however, takes an innovative approach by looking at the...
Resource Type:: Undergraduate Thesis and Presentation

Recycling Potential of Sequential Hydrothermal Liquefaction Aqueous Co-Product Using Chlorella vulgaris

Creator:: Wallach, William J.
Abstract:: Bio-oil from hydrothermal liquefaction (HTL) represents a promising fuel source due to large higher heating values and compatibility with current energy infrastructure. For bio-oil production to become commercially viable, novel methods of co-product recycling must be explored. The aims of this study were to culture Chlorella vulgaris, a common HTL...
Resource Type:: Undergraduate Thesis and Presentation

Quantification of Cytokine Production Following Exposure to 2,3,7,8-Tetrachlorodibenzo-p-dioxin (TCDD) to Determine Potential Role in Suppression of the Immune Response in a Graft versus Host (GvH) Model

Creator:: Magaña, Laura Cristal
Abstract:: 2,3,7,8-tetrachlorodibenzo-p-dioxin (TCDD) is a potent immunosuppressant and a prototypic ligand for the aryl hydrocarbon receptor (AhR). In a graft versus host (GvH) response, treatment with TCDD suppresses a cytotoxic T-lymphocyte (CTL) response by Day 10, concurrent with a T-regulatory (Treg) like phenotype in the donor CD4+ T-cells, observed on Day...
Resource Type:: Undergraduate Thesis and Presentation

Preliminary Examination of the socioeconomic and housing factors that influence exposure to flame-retardants (FRs) in passive samplers worn by preschool-aged children in Oregon

Creator:: Willard, Kenneth
Abstract:: Abstract Flame-retardants (FRs) generally enter the environment by dissociating from the products they were originally manufactured into. The predominant class of FR used in consumer products before their eventual phase-out in the mid-2000s were the polybrominated diphenyl ethers (PBDEs). Previous studies have illustrated a correlation between socio-economic status, notably gross...
Resource Type:: Undergraduate Thesis and Presentation

Predation enhances survival and growth of pathogenic and non-pathogenic isolates of Vibrio cholerae

Creator:: Solis-Ruiz, Jose M.
Abstract:: Vibrio cholerae a major health problem in developing countries because of its ability to cause the disease cholera in humans. As V. cholerae bacteria are common inhabitants of temperate marine and brackish water environments worldwide, they are subject to intense top-down pressure by amoebae, which can affect their survival and...
Resource Type:: Undergraduate Thesis and Presentation

Pheromone mating disruption of filbertworm moth (Cydia latiferreana)in commercial hazelnut orchards

Creator:: Hedstrom, Christopher
Abstract:: BACKGROUND: Oregon produces 99% of the hazelnuts grown in the United States. The key pest threatening commercial hazelnut orchards in Oregon is Cydia latiferreana (Tortricidae), filbertworm moth (FBW). Currently, most growers control FBW with one to two applications of esfenvalerate (Asana XL), a broad spectrum pyrethroid. Pheromone mating disruption is...
Resource Type:: Undergraduate Thesis and Presentation

Partial purification of endo-1,4-β-D-glucanase I of Trichoderma reesei and use in small-scale enzymatic hydrolysis of cellulose

Creator:: Pautsch, Lindsay
Abstract:: In order to reduce the cost of lignocellulosic ethanol production, a model was previously developed to predict the amount of fermentable sugar released based on parameters concerning both biomass and enzymes. To validate this model, enzymatic hydrolysis must be carried out using individual purified cellulase enzymes. Endo-1,4-β-D-glucanase I (EG I),...
Resource Type:: Presentation

Nutrient recovery from anaerobic co-digestion of lipid-extracted Chlorella vulgaris andwaste activated sludge

Creator:: Gordon, Michael Ian
Abstract:: Anaerobic digestion of lipid-extracted algal biomass has been proposed as a method to recover and recycle nutrients in algal biofuel systems. The purpose of this study was to quantify recoverable nitrogen and phosphorus from anaerobically digested C. vulgaris. Recoverable nutrients were deemed those present in the liquid phase of anaerobic...
Resource Type:: Undergraduate Thesis and Presentation

Mycobacterium tuberculosis Selective Adenosine Kinase Nucleoside Polymers for Inhalation Therapy

Creator:: Snow, Erika
Abstract:: Respiratory illnesses caused by both viral and bacterial infection are serious issues for global healthcare providers. With the emergence of new, drug-resistant forms of these diseases, innovative drugs and treatment therapies are needed. M tuberculosis is an infection that affects a large portion of the world’s population each year. Aerosol...
Resource Type:: Presentation and Undergraduate Thesis

Mono-substituted isopropylated triaryl phosphate, a major component of Firemaster 550, is anAHR agonist that exhibits AHR-independent cardiotoxicity in zebrafish

Creator:: Gerlach, Cory V.
Abstract:: Firemaster 550 (FM550) is an additive flame retardant mixture used within polyurethane foam and is increasingly found in house dust and the environment due to leaching. In this study, we sought to investigate mono-substituted isopropylated triaryl phosphate (mITP), a major component of FM550, which has been shown to cause cardiotoxicity...
Resource Type:: Presentation and Honors College Thesis

Monitoring the effects of oak woodland restoration on birds in the Willamette Valley, Oregon

Creator:: Martinez, Elena
Abstract:: Oregon White Oaks (Quercus garryana) were once abundant in the Willamette Valley, Oregon, but have drastically decreased because of fire suppression, agriculture, and human development. Oaks are an important ecosystem because they provide a diverse habitat for bird species that are insectivorous and/or cavity nesters. We studied the oak restoration...
Resource Type:: Undergraduate Thesis and Presentation

Microbes may induce soil water repellency through the production of aliphatic constituents as a response to desiccation

Creator:: Chilcote, Emma T.
Abstract:: Soil water repellency may be influenced by microbes whereby they produce aliphatic constituents (non-wetting materials) that coat the soil particles when they are subjected to desiccation stress.
Resource Type:: Presentation

Method development for extraction and purification of dermal RNA from FVB/Nmice treated with environmental PAH mixtures

Creator:: Larkin, Andrew, Siddens, Lisbeth, and Krueger, Sharon
Abstract:: Epidermal RNA samples from FVB/N mice treated with PAH standards and environmental PAH mixtures were harvested and purified using Trizol extraction and RNeasy mini prep kit purification. Epidermal RNA integrity was low (RIN mean 3.5), indicating significant RNA degradation and the need to modify handling, collection, and processing of skin...
Resource Type:: Undergraduate Thesis and Presentation

Metagenomics Analysis Reveal Host-Microbe Interactions in Cervical Cancer

Creator:: Lam, Khiem C.
Abstract:: Cervical cancer is the fourth most common cancer in women worldwide. Recently it has been shown that microbiota play a role in some types of cancer. Therefore, to understand whether microbes contribute in any way to the development and progress of cervical cancer, we investigated the cervical microbiome via analysis...
Resource Type:: Presentation and Honors College Thesis

Looking for LOV : Location of LOV1 function in Nicotiana benthamiana cells

Creator:: Rutledge, Patrick
Abstract:: To initiate the defense response to an invading pathogen, plants utilize an array of immune receptors to recognize virulence effectors. Virulence effectors are released by pathogens to suppress immune responses in target hosts. These effectors are recognized by a family of resistance proteins known as nucleotide-binding leucine-rich repeat (NB-LRR) proteins....
Resource Type:: Undergraduate Thesis and Presentation

Investigations of Pactamycin Biosynthesis

Creator:: Osborn, Andrew
Abstract:: Pactamycin, a complex aminocyclitol compound produced by Streptomyces pactum, has significant antibiotic, antitumor, and antiplasmodial activity. However, this natural product has not been developed for clinical use due to its high cytotoxicity. Modulation of its biological properties by chemical synthesis has been difficult due to its complex chemical structure. Therefore,...
Resource Type:: Undergraduate Thesis and Presentation

Investigating a Role for DNA Mismatch Repair in Signaling a Benzo[a]pyrene Diol Epoxide-Induced DNA Replication Arrest, Investigating a Role for Mismatch Repair in Activating a Benzo[a]pyrene Diol Epoxide-InducedS-phase Checkpoint

Creator:: Coburn, Jacki L.
Abstract:: Genetic and environmental factors influence individual cancer risk. Mutations in DNA mismatch repair (MMR) genes increase colon cancer risk. Exposure to carcinogens, including the ubiquitous polycyclic aromatic hydrocarbons (PAHs), also is associated with increased cancer risk. To understand the combined effects of both environmental exposures and genetic risk, we investigated...
Resource Type:: Undergraduate Thesis and Presentation

Insights into the root-knot nematode (Meloidogyne spp.) microbiome using comparative 16S rDNA metagenomics

Creator:: Carleson, Nick
Abstract:: Root-knot nematodes (Meloidogyne spp.) are one of the most important global plant pathogens. Recent innovations in molecular techniques have allowed increased study of this important pest, including the ability to investigate associated microbiomes. This study used 16S rDNA metagenomic sequencing to characterize the microbiome of Meloidogyne hapla, the northern root-knot...
Resource Type:: Presentation and Honors College Thesis

Inhibition of α-Amylase and α-Glucosidase by Bioflavonoids

Creator:: Griffith, Anneke M. (Tucker)
Abstract:: Various flavonoid-rich plant extracts have shown efficacy in the treatment of diabetes. Although it is often assumed that dietary flavonoids exert biological antioxidant effects, it is possible that the observed effects work in carbohydrate metabolism. In this study we evaluated the effect of catechins and catechin containing extracts on α-amylase...
Resource Type:: Presentation and Honors College Thesis

Incorporating Bioenergy Education into Agricultural Based Youth Programs : A pilot study

Creator:: Schrock, Nicole
Abstract:: 4-H, an agriculture based youth program, promotes a variety of curricula in both agriculture and Science, Technology, Engineering and Math (S.T.E.M.) topics. However, science based curricula provided by this organization gravitates away from the programs agricultural roots. An effort was made to pilot a test on lesson plans that would...
Resource Type:: Undergraduate Thesis and Presentation

Impact of lignin on efficiency of small-scale enzymatic hydrolysis of lignocellulosic biomass

Creator:: Potapchuk, Angelica
Abstract:: Energy production and consumption is a major environmental and economic concern in the world today. Biofuel produced from lignocellulosic biomass is being explored as an alternative energy source to petroleum. Lignocellulosic biomass is comprised of cellulose, hemicellulose, and lignin. To produce biofuels, lignocellulosic biomass must be broken down to expose...
Resource Type:: Presentation and Undergraduate Thesis

Impact of lignin composition on enzymatic hydrolysis of cellulosic biomass

Creator:: Oldfield, Crystal
Abstract:: Lignocellulosic biomass has potential as a renewable resource for global energy and bioproducts production. Biomass consists of three main polymers, cellulose, hemicellulose, and lignin. Cellulose is a homopolymer of glucose, while hemicellulose and lignin are heteropolymers. Lignin is primarily made of syringyl (S), guiacayl (G) and p-hydroxyphenyl (H) units. Pretreatment...
Resource Type:: Undergraduate Thesis and Presentation

Immunohistochemical characterization of melanomas in bigenic mice containing activated Cdk4 and keratinocyte specific ablation of Retinoid-X-Receptor alpha (RXRα) protein With international consideration of Differences in Societal and Behavioral Attitudes toward Skin Cancer between Japanese American and Japanese

Creator:: Nguyen, Vananh M.
Abstract:: OVERVIEW OF INTRODUCTION - This is a combined thesis for both disciplines of BioResource Research (BRR)Interdisciplinary and International Degree (ID) Programs OSU. The first chapter encompasses the BRR research, which is a preliminary study utilizing immunohistochemical method to characterize melanomas in bigenic mice with activated Cdk4 protein and Retinoid-X-Receptor α...
Resource Type:: Presentation and Undergraduate Thesis

Identity and drought tolerance effects of fungal seed endophytes in Coastal Douglas-fir (Pseudotsuga menziesii var. menziesii)

Creator:: Bergmann, Gillian E.
Resource Type:: Presentation

Honey Bees (Apis mellifera) and Agricultural Chemicals: Global to Micro Perspectives

Creator:: Bernert, Ann
Abstract:: Fungicide sensitivity of honey bee associated fungi Abstract - Honey bees are exposed to a wide range of pesticides while pollinating agricultural crops. These pesticides residues are found in beeswax, nectar and pollen in the hive. Some of the pesticides found are fungicides which are not generally considered harmful to...
Resource Type:: Undergraduate Thesis and Presentation

Genetic diversity of benthic marine cyanophage as revealed by sequence analysis of various phage marker genes

Creator:: Vallota-Eastman, Alec
Abstract:: Cyanophage are viruses that infect cyanobacteria, photosynthetic microorganisms which are known to produce several anticancer and antibacterial chemical compounds. Cyanophage are significant members of microbial communities in marine and freshwater environments. There has been significant difficulty inventorying marine and freshwater cyanophage, however, due to the difficulty in cultivating their hosts....
Resource Type:: Presentation and Undergraduate Thesis

Genetic Analyses of Root System Development in the Tomato Crop Model

Creator:: Hoth, Kelsey
Abstract:: Four root mutants, diageotropica (dgt), and altered root architecture (ara) 1, 2, and 3, were used to study root architecture and better understand the process by which root architecture is determined. Adventitious root formation, tissue response to auxin, nutritional response, and starch accumulation in the leaves were tested in ara...
Resource Type:: Undergraduate Thesis and Presentation

Generation of Kisspeptin Cell Lines to Investigate the Sex Steroid-Mediated Initiation of Puberty

Creator:: Jacobs, Dakota C.
Abstract:: Mammalian female reproduction requires preovulatory surges of gonadotropin-releasing hormone (GnRH) from neurons in the preoptic area (POA) of the hypothalamus, initiated by elevated estradiol (E₂). Rising E₂ activates a subset ofsexually dimorphic Kisspeptin neurons in the female, located in the anteroventralperiventricular nuclei (AVPV). Conversely, E₂ negative feedback is mediated by...
Resource Type:: Presentation and Undergraduate Thesis

Gene-Environment Interactions In Hereditary Colorectal Cancer Risk

Creator:: Almousawi, Fatimah Hussain
Abstract:: Cancer economic impact is enormous and depending on the stage in which a colon cancer is detected, five-year survival rates for colon cancer may be as high as 74%, or as low as 6% (American Cancer Society, 2012). Thus early prevention of colon cancer is crucial to maximize the chances...
Resource Type:: Undergraduate Thesis and Presentation

Gene regulatory mechanisms of the lncRNA Fendrr

Creator:: Koehler, Monika
Abstract:: Embryonic development, where organs and major structures begin to develop, requires precise coordination of numerous gene regulatory pathways. Fendrr is an long non-coding RNA (lncRNA) that plays a role in regulating gene expression in mesodermal tissues during early embryonic development in mouse. The lateral plate mesoderm (LPM) is an earlier...
Resource Type:: Presentation and Undergraduate Thesis

Fungal endophytes as source to combat bacterial infections

Creator:: Green, Jaimie R
Abstract:: Endophytes, foliage inhabiting fungi, are an unexplored source of fungal biodiversity and a potential resource for the production of bioactive natural products. In this research, leaf tissues from the species Arbutus menziesii, Rhododendron macrophyllum and the genus, Ilex and Salix were collected for the isolation of endophytic fungi. Fungal extracts...
Resource Type:: Presentation and Undergraduate Thesis

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