The kinetics of absorption of L-methionine-methyl-C14 by Hymenolepis citelli were studied using short term incubations. The absorption was shown to follow saturation kinetics. No significant differences were shown between ...

A survey of sixty-two mollusks was made for arginase activity, The enzyme was found to be present in all terrestrial forms examined, while the distribution in fresh water and marine mollusks was random. When arginase is ...

The past century of research on bone physiology has established that the osteoclast is involved in the resorption of bone. The presence of parathyroid hormone in the circulating body fluids causes the calcium concentration ...

Tissues of Ascaris lumbricoides (variety suum), the large round worm of pigs, contain trehalose, a disaccharide composed of two molecules of glucose. Minces of various Ascaris tissues were incubated with C14glucose to ...

The luminal and glandular epithelia of the uterus of the rat during delayed implantation have been studied with the electron microscope, and the fine structure of these tissues has been described in detail. Light microscope ...