A root-lesion nematode, Pratvlenchus penetrans, was determined to
be a major component of peppermint stand decline in Western Oregon.
Regression analysis showed that P. penetrans root densities in August
were negatively correlated (P=0.01) with yield, while soil densities
in August and root and soil densities in April were poorly correlated...
Mitotic recombination is a common autosomal mutation in mammalian cells involving crossover events between homologous chromosomes. This process can convert a cell with a heterozygous deficiency to one with a homozygous deficiency, and thus often represents the second step in tumor suppressor gene inactivation. In this study I examined the...
DNA damage, if not repaired, can become a mutation. Mutation
accumulation is associated with initiation and progression of tumorigenesis. DNA
mismatch repair (MMR) is required for maintaining genetic stability by repairing
replication errors. Biochemical studies have shown that MMR also recognizes
mismatch-causing DNA lesions, suggesting the role of MMR in...
The multistage model of carcinogenesis states that an accumulation of mutations in genes that are important for maintaining cellular homeostasis may lead to cancer. A specific type of mutation observed in particular types of cancer is the CC-->TT mutation found in the TP53 gene of patients with basal or squamous...