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The morphology of the lymphatics of the rabbit ovary, and their possible relation to ovulation
The number and size of the lymph vessels in the rabbit ovary appear to be disproportionate to the size of the organ. From a cursory examination of the ovary, it is difficult to see why such a relatively small organ should ...
Seasonal variation of metabolism and thyroid activity in the Mexican ground squirrel Citellus mexicanus
Metabolic measurements in thermal neutrality for the Mexican ground squirrel, Citellus mexicanus, in-dicated a mean summer metabolism of 1.10± .08 cc 02/gm/hr and a mean winter metabolism of .56±.08 cc 02/gm/hr. Animals ...
The effects of pyridoxal and ammonium ion on the active transport of methionine and other amino acids in H. diminuta
The uptake and accumulation of methionine and other amino acids in the cestode H. diminuta is studied with respect to the influence of pyridoxal, pyridoxine, and ammonium ion. It is found that neither pyridoxal nor ...
Studies on trehalose phosphate synthetase in Mycobacterium smegmatis
The biosynthesis of trehalose phosphate occurs by two reactions which utilize different sugar nucleotides, UDP-glucose or GDP-glucose. Cell free extracts of several mycobacteria catalyzed the synthesis of trehalose phosphate ...
The physiology of torpor in Perognathus hispidus
Perognathus hispidus can thermoregulate and remain homeothermic between ambient temperatures of 5.0 to 34.0 °C.. Above 34 °C., animal became hyperthermic and death occured at Ta of 37 °C.. In the normothermic animal, the ...
Responses of Littorina irrorata to temperature and salinity variations
Experiments were conducted to determine the survivability of Littorina irrorata and L. lineolata under various conditions of water temperature and salinity, and to determine the sodium and potassium ion concentrations in ...