With archaeological dates of >30,000 supporting human presence in the New World, there emerges the possibility that ~ sapiens may not have been the first human occupant in North America. The possibilities for Homo erectus ...

Hybrid hormones were created using combinations of equine (e) LH, eFSH, and eCG alpha- and beta-subunit preparations. The efficiency of eFSH beta association was highest with eLH alpha (64-72%) and was lowest with eCG alpha ...

The household division of labor and pay inequality between men and women is examined using the 2006 American Time Use Survey. There are three main theoretical perspectives to examine when discussing household division of ...

Ethylnitrosourea mutagenesis of spermatogonial stem cells and a three-generation breeding scheme were used to screen for recessive mutations that cause defects in phenylalanine metabolism leading to elevated serum levels ...

Speculations on the evolution of hominid social structure have become quite popular in recent years. The primary concern of these theorists has been the development of a model which would accurately depict the adaptive ...

A series of peptidyl thiobenzyl esters was used to map the active site of human leukocyte proteinase 3. The steady-state kinetics parameters reveal the following features regarding the substrate specificity of proteinase ...

Derivatives of hydantoin have been found to inactivate human leukocyte elastase irreversibly. Chymotrypsin and cathepsin G are also inhibited by these compounds.