The distribution of calcium—47 in the rat

Abstract
Plasma specific activities were measured at various times after the intravenous injection of Ca-47 in 4 different age groups of rats. The data may be represented as 2 power functions. The change in power function occurs at a set time which is significantly different in 3 of the age groups. Various bones, muscle and skin all show different uptakes of the Ca-47 and the change in the power function of the plasma data probably represents an equilibrium of the soft tissue Ca.