Effects of hydration and dehydration on cyclic adenosine 3′,5′-monophosphate concentration in the rat kidney

Renal 3′,5′-AMP concentration has been measured in two groups of rats, one of which was hydrated, the other one was dehydrated by withdrawal of drinking-water for a period of 4–5 days. The first group was assumed to have low, the latter to have high vasopressin (ADH) plasma concentrations.