Desoxyribonucleic Acid (DNA) Content of Mammary Gland During Pregnancy and Lactation.,

Abstract
A study of the DNA concentration per nucleus was carried out on kidney and spleen and on the developing and lactating mammary glands of rats. The DNA concentrations remained normal in the pregnant and non-pregnant stages. On the first day of lactation an abrupt drop occurred which returned approximately to normal by 18th day of lactation.