Now showing items 21-30 of 78
Genetic relatedness and queen number in a neotropical swarm-founding wasp, Polybia emaciata
The maintenance of eusociality in neotropical, swarm-founding wasps is difficult to explain because brood relatedness is predicted to be very low due to the presence of multiple queens in each colony and because workers ...
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 ...
Some effects of light intensity and oxygen concentration of Chlorella sorokiniana and an oxygen resistant strain
Experiments were carried out to compare the thermotolerant unicellular green alga Chlorella sorokiniana and an oxygen resistant strain isolated from the species. Studies were made at 39°C over a range of light intensities ...
Hormonal and radiation effects on osteoclastic proliferation
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 ...