POSTNATAL CHANGES IN THE INTENSITY OF IMMUNOHISTOCHEMICAL REACTION TO ANDROGEN RECEPTOR ANTIBODY IN MOUSE MASSETER MUSCLE

The masseter muscle of developing male and female mice were stained immunohistochemically with a monoclonal antibody specific to androgen receptors (ral IgG). From day 5 to 20 after birth, very weak reactions were detectable in the nuclei of masseter muscle from male and female mice. With the progression of weaning, the intensity of the reaction increased gradually in the muscle from both males and females. On the 30th postnatal day, a relatively strong reaction was observed in the masseter muscles, and by postnatal day 40 the reaction became much stronger. No sexual difference in the intensity of the reaction to androgen receptors was observed