I. THE RELATIVE AMOUNTS OF PRESSOR AND RENAL ACTIVITY IN "VASOPRESSIN" AND "OXYTOCIN"II. SOME EVIDENCE INDICATING THE PRESENCE OF A THIRD OR RENAL HORMONE IN THE POSTERIOR LOBE OF THE PITUITARY GLAND

Abstract

Experiments on spinal cats and bladder fistula dogs indicate that the renal activity of "oxytocin" is more than 50 times that of a pressor equivalent of "vasopressin" and 25 times that of a like amt. of standard pituitary powder. This is taken as indicating the presence of a 3rd or renal hormone in extracts of the posterior lobe of the pituitary gland which is chemically separate from the pressor and oxytocic hormones.