Download or read book The Effect of Thiouracil on the Uptake of Radioactive Iodine by the Thyroid Gland of Summer Frogs rana Pipiens written by Samuel Arthur Matthews and published by . This book was released on 1950 with total page 12 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book The Effect of Propylthiouracil on the Oxygen Consumption and Radioiodine Metabolism of the Frog Rana Pipiens in Winter written by Herman Matthew Meisner and published by . This book was released on 1961 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: This study was undertaken to evaluate the physiological importance of the thyroid gland in the adult frog, Rana pipiens , in winter. Male frogs, weighing between 40-55 grams, were kept in running water and fed liver once a week. The thyroid gland was chemically inhibited by oral administration of 1.5 mg. of propylthiouracil three times a week. Oxygen consumption was measured weekly from December 21 to February 23 with volumetric respirometers at a temperature of 16+0.1°C. There were never any significant differences between the metabolic rates of the propylthiouracil inhibited frogs and the controls over the entire experimental period. Propylthiouracil effectively blocked the thyroid radioiodine uptake and blood conversion ratio, but after nine weeks, thyroid iodine stores were only reduced by one-half. This low secretion rate together with the fact that propylthiouracil did not alter metabolic rate suggests that the frog thyroid is of no calorigenic importance during the winter. The seasonal thyroid activity pattern was found to be characterized by a regression in the iodine concentrating capacity of the thyroid gland and blood from August to December, and reactivation towards the end of February. The appearance of monoiodotyrosine and diiodotyrosine in the circulation of Rana pipienS indicates that thyroidal deiodinase is unable to reduce iodotyrosines to iodide. It is postulated that there is an association between the presence of iodotyrosines in the circulation and the reduced thyroid function of poikilotherms.

Download or read book Nuclear Science Abstracts written by and published by . This book was released on 1950 with total page 930 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Technical Information Pilot written by and published by . This book was released on 1951 with total page 500 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book A Study of the Effect of Thiocyanate and Thiourea on the Stored Iodine Content of the Thyroid Gland of the Frog Rana Pipiens written by Leonard M. Goldberg and published by . This book was released on 1951 with total page 78 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Annual Report Brookhaven National Laboratory written by Brookhaven National Laboratory and published by . This book was released on 1949 with total page 316 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Autoradiography in Biology and Medicine written by George A. Boyd and published by Academic Press. This book was released on 2013-10-22 with total page 416 pages. Available in PDF, EPUB and Kindle. Book excerpt: Autoradiography in Biology and Medicine focuses on the applications of autoradiography in medicine and biology, including photographic processes, emulsions, and response of films to isotopes and x-rays. The book first offers information on the meaning of autoradiography, including the etymology of autoradiography, photographic emulsion as a scientific instrument, and the relationship of biologists and autoradiography. The publication then examines the photographic process and comparative response of commercial and scientific emulsions. Discussions focus on fixation, washing, emulsion, response of films to electrons, x-rays, and gamma rays, and response of films to beta ray spectra of isotopes. The text takes a look at commercial photographic materials for autoradiography, autoradiographic image, and resolution. The manuscript then reviews the estimation of dose and exposure time, sources of error, and techniques. Topics include chemical variables, estimation of exposure time, errors occurring during the preparation of the autoradiogram for exposure, and contour autoradiography. The book is a valuable reference for readers interested in autoradiography.

Download or read book Isotopes written by U.S. Atomic Energy Commission and published by . This book was released on 1951 with total page 464 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Canadian Journal of Zoology written by and published by . This book was released on 1962 with total page 1460 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book TID written by and published by . This book was released on 1958 with total page 120 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Radioisotopes in Animal Physiology written by J. A. McCormick and published by . This book was released on 1958 with total page 120 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Radiology written by and published by . This book was released on 1953 with total page 1118 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Thyroidal Response to Goitrogens by Desmognathus Fuscus Rafinesque Using Radioactive Iodine as Indicator written by Jacob Fisher and published by . This book was released on 1953 with total page 25 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Selected Histochemical and Histopathological Methods written by Samuel Wesley Thompson and published by . This book was released on 1966 with total page 1128 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Administrative and Scientific Progress Report written by Brookhaven National Laboratory and published by . This book was released on 1950 with total page 492 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Quarterly Progress Report written by Brookhaven National Laboratory and published by . This book was released on 1950-09-30 with total page 132 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Catalog written by Library of the Marine Biological Laboratory and the Woods Hole Oceanographic Institution and published by . This book was released on 1971 with total page 876 pages. Available in PDF, EPUB and Kindle. Book excerpt: