Joseph Zambernard

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Giant salamanders, Amphiuma means, measuring 240 to 280 millimeters from snout to vent, tolerate induced anoxia for 6 hours. After 3 hours of anoxia, hepatic glycogen units are reduced in size and concentration; after 6 hours the glycogen units are almost completely depleted. Greater development and changes in the density of the endoplasmic reticulum(More)
By JosEPh ZAMBERNARD, MATTHEW BLOCK, ALBERT VATrER AND LEW TRENNER H EMATOLOGISTS have traditionally evaluated hematopoiesis in smears of aspirated marrow and have been aware of some of the errors inherent in this technic, most, if not all of which are corrected by examination of seetions.1 The errors include inability to obtain comparable material for(More)
The use of clinical histories and radiographs of cadavers as a method for teaching anatomy was explored. This method was found to generate student interest in both anatomy and radiology, to make anatomy clinically relevant, and to supplement the laboratory manual by guiding the student through the dissection of medically or surgically complicated cases. It(More)
A decrease in pulmonary vascular responsiveness in aging animals during exposure to chronic hypoxia has been previously reported; however, morphological documentation is lacking. Lungs from young (3–5 months) and aging (12–14 months) Sprague-Dawley rats, exposed to and recovering from chronic hypoxia, were morphometrically analyzed at the light-microscopic(More)
The pulmonary trunk, muscular arteries, and arterioles of male Sprague-Dawley rats exposed to simulated high altitude hypoxia (380 mm Hg) for six weeks were studied for glycogen localization. As early as three days exposure time, glycogen particles were mobilized in the smooth muscle cells of muscular arteries and arterioles. Weekly sacrifice of animals(More)
Pulmonary alveolar macrophages (PAM) from rats exposed to a single dose of ZnO or NiO showed distinct changes in size and ultrastructure. ZnO exposure brought about considerable reduction in the size of the cells, which can be distinguished into two types of macrophages. The macrophages contained a prominent nucleolus, several primary and secondary(More)