Download or read book The Structure and Regeneration of the Poison Glands of Plethodon written by Calvin Olin Esterly and published by . This book was released on 1904 with total page 68 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Snake Venoms written by C.-Y. Lee and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 1162 pages. Available in PDF, EPUB and Kindle. Book excerpt: The past decade has been a period of explosion of knowledge on the chemistry and pharmacology of snake toxins. Thanks to the development of protein chemistry, nearly a hundred snake toxins have been purified and sequenced, representing one of the largest families of sequenced proteins. Moreover, the mode of action of these toxins has been largely elucidated by the concerted efforts of pharmacologists, electro physiologists, and biochemists. As a result of these studies, some of the snake toxins, e.g., a-bungarotoxin and cobra neurotoxins, have been extensively used as specific markers in the study of the acetylcholine receptors. Indeed, without the discovery of these snake toxins, our knowledge of the structure and function of nicotinic acetylcholine receptors would not have advanced so rapidly. The contribution of snake venom research to the biomedical sciences is not limited to the study of cholinergic receptors. Being one of the most concentrated enzyme sources in nature, snake venoms are also valuable tools in biochemical research. Venom phosphodiesterase, for example, has been widely used for structural studies of nucleic acids; proteinase, for the sequence studies of proteins and pep tides ; phospholipase A , for lipid research; and L-amino acid oxidase for identifying optical z isomers of amino acids. Furthermore, snake venoms have proven to be useful agents for clarifying some basic concepts on blood coagulation and some venom enzymes, e.g., thrombin-like enzymes and pro coagulants have been used as therapeutic agents.

Download or read book The Venom of Heloderma Classic Reprint written by Leo Loeb and published by Forgotten Books. This book was released on 2017-10-16 with total page 254 pages. Available in PDF, EPUB and Kindle. Book excerpt: Excerpt from The Venom of Heloderma There exists much difference of Opinion in regard to the real function of the poison gland. Does it merely take up from the blood the poisonous material produced by other cells, or does it actually manufacture the venom from non poisonous substances supplied through blood or lymph? Calmette and Faust accepted the first view. In snakes the blood and, as Flexner and Noguchi found, even the ova contain a venom very similar to that secreted by the poison gland. Calmette and Faust believe, therefore, that the cells of the poison gland have a selective affinity for the venom circulating in the blood. Inas much as Calmette noticed that the heat resistance of the poisonous substance present in the blood differs somewhat from that of the venom secreted by the poison gland, he assumes that a precursor which is poisonous and has been produced by other cells is slightly modified in the poison gland and then secreted. This difference in the heat resistance of the two poisons he regards as a reason sufficient to exclude the view of Phisalix and Bertrand, who regard the venom circulating in the blood as being manufactured in the venom gland and eliminated in the blood through a mechanism related to internal secretion. They found, accordingly, that after extirpation of the venom gland of snakes the blood lost its toxic properties. In H eloderma conditions are less complicated. Here the venom can not be found anywhere in the body except in the poison gland. Neither does the blood become poisonous after extirpation Of the poison glands, as should be expected if the poison glands served merely as a place of elimination for the venom prepared elsewhere. We can therefore be certain that in the case of H eloderma the poison gland is the place where the venom is produced out of non-poisonous material carried to the gland. Such a conclusion is also in accordance with the view that the granules of the gland are the carriers Of the venom. About the Publisher Forgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.forgottenbooks.com This book is a reproduction of an important historical work. Forgotten Books uses state-of-the-art technology to digitally reconstruct the work, preserving the original format whilst repairing imperfections present in the aged copy. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in our edition. We do, however, repair the vast majority of imperfections successfully; any imperfections that remain are intentionally left to preserve the state of such historical works.

Download or read book University of California Publications in Zoology written by University of California (1868-1952) and published by . This book was released on 1905 with total page 412 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book The Hydroida of the Pacific Coast of North America written by Harry Beal Torrey and published by . This book was released on 1905 with total page 424 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book The Venom of Heloderma written by Leo Loeb and published by . This book was released on 1913 with total page 264 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book The Bicentenary of the Birth of Carolus Linnaeus written by Edmund Otis Hovey and published by . This book was released on 1909 with total page 606 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Annals of the New York Academy of Sciences written by Thomas Lincoln Casey and published by . This book was released on 1908 with total page 936 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Carnegie Institution of Washington Publication written by and published by . This book was released on 1909 with total page 456 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Snake Venoms written by Hideyo Noguchi and published by . This book was released on 1909 with total page 452 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Record of Meetings of the New York Academy of Sciences written by Alexis Anastay Julien and published by . This book was released on 1907 with total page 1412 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Salivary Glands written by Abigail S. Tucker and published by Karger Medical and Scientific Publishers. This book was released on 2010-01-01 with total page 157 pages. Available in PDF, EPUB and Kindle. Book excerpt: Salivary glands are of utmost importance for several physiological functions ranging from the protection of teeth and surrounding soft tissues to the lubrication of the oral cavity, which is crucial for speech and perception of food taste. This publication highlights specific aspects of salivary gland development, investigating the mechanisms involved in embryonic development, the current research in stem cells, the ability of adult glands to regenerate and the signalling pathways involved in this process. Key stages of salivary gland development, moving from initiation to differentiation of the glands, are discussed, as well as unusual adaptations, ranging from making silk to making venom. The book finally provides new data on surgical techniques and diagnostic tools for clinicians involved in salivary gland disorders. Researchers and students with an interest in craniofacial sciences as well as clinicians dealing with salivary gland disorders will find this publication an excellent source of up-to-date information.

Download or read book Classified List of Publications of the Carnegie Institution of Washington written by Carnegie Institution of Washington and published by . This book was released on 1913 with total page 264 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book A Text book of Entomology written by Alpheus Spring Packard and published by . This book was released on 1898 with total page 762 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Contributions to Embryology written by Carnegie Institution of Washington and published by . This book was released on 1915 with total page 126 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book The Quarterly Review written by William Gifford and published by . This book was released on 1925 with total page 920 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book The Intimate Structure of Secreting Glands written by Johannes Müller and published by . This book was released on 1839 with total page 210 pages. Available in PDF, EPUB and Kindle. Book excerpt: