Attention is directed to the lack of a readily available small laboratory animal to replace the horse in evaluating the innocuity and antigenicity of strains of horsesickness virus attenuated for equines by serial intracerebral ...

Experiments are described in which eleven sheep were artificially infested and their reactions studied in detail. The main lesion was found to be a marked decrease in plasma albumin concentration with a resultant shrinkage ...

The urinary excretion of pregnanediol has been studied over the full period of gestation in a group of twenty Angora ewes. A comparison is drawn between animals in which conception presumably did not occur, those which ...