Some enzymic changes in the mammary gland of rats during pregnancy, lactation and mammary involution

Recent work has emphasized that the lactating mammary gland is a site of intense synthetic activity (see During the past five years, fat synthesis in the gland has received con- siderable attention, but protein synthesis has been relatively neglected, although the mammary gland is known to synthesize large quantities of specific proteins, and, since these are promptly secreted into the milk, an equilibrium condition is never reached and the high rate of protein synthesis is maintained.