Changes in blood vasotocin level in response to uterine stimulation in the hen.

Changes in blood vasotocin level in response to uterine stimulation in the hen. Acta Physiol. Pol. 1979, 30 (2): 267--272. The blood vasotocin level after uterine and vaginal stimulation was determined by bioassay, on the isolated frog bladder. It was found that uterine distension causes a 2--3 fold increase in the blood vasotocin level compared to that before distension. Vaginal distension was without any effect on the blood vasotocon level.