Effect of Human Pregnancy Serum on Avian Depressor Activities of Oxytocin and Desamino-Oxytocin.

Abstract
Summary The effects of human pregnancy and non-pregnancy sera on the avian depressor activities of oxytocin and desamino-oxytocin have been investigated. Pregnancy serum had no effect on desamino-oxytocin under conditions in which oxytocin was inactivated. Non-pregnancy serum was without effect on either compound.