... for amphibians that hibernate on land. Accordingly, in the Andean toad( Bufo spinulosus ), we investigated the effect of short-term fasting and hibernation on the hydrolytic activity of digestive enzymes, histology of the small intestine, gross morphology of digestive and other internal organs and standard...

...H. M. Levesque; M. A. Shears; G. L. Fletcher; T. W. Moon SUMMARY Atlantic salmon ( Salmo salar ) made transgenic for growth hormone(GH) and non-transgenic salmon were sampled at 4 and 7 months of age to estimate myogenic factors, satellite cell proliferation and metabolic enzyme activities...

... program to investigate the size-dependence of flight energetics in Panamanian orchid bees. We succeeded in measuring rates of O 2 consumption and CO 2 production in vivo during hovering flight, as well as maximal activities( V max values) in vitro of key enzymes in flight muscle energy metabolism in nine...

.... In all cases, hepatocytes with the lowest density (less than 1.040 g ml − 1 ) were more oxidative in scope, as judged by the activities of mitochondrial enzymes (citrate synthase, aspartate aminotransferase, glutamate dehydrogenase); activities of these enzymes (normalised to cell protein) were...

...Ralph A. Ferguson; Kenneth B. Storey ABSTRACT Studies were undertaken in vitro and in vivo to assess the maximal activities of 26 glycolytic and associated enzymes of rainbow trout ( Oncorhynchus mykiss ) red cells. The red cells possess a complete sequence of glycolytic enzymes capable...

... and acid-base status, all of which remained at in vivo levels over the 2h incubation period. Enzymes diagnostic of glycolysis, the tricarboxylic acid (TCA) cycle and phosphagen metabolism were all present-in significant amounts in red blood cells. In direct comparisons of 14 C-labelled substrates at normal...