The major historical studies that have examined American
biology have emphasized the development of experimental biology at
the end of the nineteenth century. In this characterization, the
descriptive branch of biology has often been treated as less than
important and, in several cases, as a hindrance in the application
of...
This thesis is an investigation of the natural products deriving from marine algae and cyanobacteria and has resulted in the discovery of eleven new secondary metabolites. The structure elucidations of these new molecules were performed using a variety of spectroscopic techniques. Four new macrolides were isolated and characterized from the...
The epidermis of the brook lamprey, Lampetra planers
(Bloch), has been examined with histological and histochemical
techniques and the fine structure of the fibrillar
club cells has been studied with electron microscopy.
In histological structure the epidermis was found to
correspond to the observations of earlier workers. The
stratified epidermis...