منابع مشابه
Two types of chromaffin cells in the adrenals of the bullfrog, Rana catesbiana. A comparative study.
Two types of chromaffin cells have long been recognized in the adrenal medulla of various vertebrate species (see KOLMER, 1918), BANDER (1950), for the first time, correlated these types of chromaffin cells with two different types of hormones secreted by the adrenal medulla, noradrenaline and adrenaline. Only one type of chromaffin cell has been known in the frog adrenals. According to its his...
متن کاملElectron Microscopy of the Oxyntic Cell in the Gastric Glands of the Bullfrog, Rana Catesbiana
The fine structure of the oxyntic cell from the gastric glands of the bullfrog was studied in lead hydroxide-stained sections of gastric mucosa fixed in buffered osmium tetroxide and embedded in n-butyl methacrylate. The oxyntic cell in non-acid-secreting stomachs (gastric juice pH, 7.4-7.8) is characterized by: (a) numerous closely packed smooth surfaced vesicular and tubular profiles disposed...
متن کاملSome histochemical observations on the telencephalon of the bullfrog, Rana catesbeiana Shaw.
The histochemically determined distribution of acetylcholinesterase, monoamine oxidase and succinate dehydrogenase in the telencephaIon of the bullfrog supports the classically recognized divisions of the pallium and subpallium. Analysis also corroborates the following generally recognized anuran-amniotic homologies: anuran medial pallium to amniotic medial cortex, anuran septal nuclei to amnio...
متن کاملTHE effects of tonic lung inflation on ventilation in the American bullfrog Rana catesbeiana Shaw.
This study was designed to determine whether lung inflation stimulates or inhibits breathing in frogs by examining the effect of tonic lung inflation on the 'fictive' breathing pattern of decerebrate, unidirectionally ventilated bullfrogs. Neural discharge was monitored in the trigeminal nerve as an indication of the frequency and force of contraction of the buccal pump, and in the laryngeal br...
متن کاملNew Trends on Antineoplastic Therapy Research: Bullfrog (Rana catesbeiana Shaw) Oil Nanostructured Systems.
Bullfrog oil is a natural product extracted from the Rana catesbeiana Shaw adipose tissue and used in folk medicine for the treatment of several diseases. The aim of this study was to evaluate the extraction process of bullfrog oil, to develop a suitable topical nanoemulsion and to evaluate its efficacy against melanoma cells. The oil samples were obtained by hot and organic solvent extraction ...
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ژورنال
عنوان ژورنال: Scientific American
سال: 1886
ISSN: 0036-8733
DOI: 10.1038/scientificamerican02131886-103