The leaf- cutter bee Megachile rotundata (Fabricius) is an important
alfalfa pollinator in western North America.
This study was designed to provide information on methods of
orientation used by M. rotundata in order to make recommendations
regarding the parameters within which adult nesting populations may
Preliminary studies suggest...
Reports of investigations on nucleases in arterial tissue are
few in number. The present study is concerned with the purification
and characterization of an aortic ribonuclease.
An endonuclease (ARNase I) isolated from the bovine aorta has
been purified 4611 fold by means of fractionation with ethanol, acid
extraction, isoionic precipitation,...