They secrete anti-Müllerian hormone, testosterone, and Dihydrotestosterone. The testes begin to secrete three hormones that influence the male inside and exterior genitalia: they secrete anti-Müllerian hormone (AMH), testosterone, and dihydrotestosterone (DHT). Testosterone, which is secreted and converts the mesonephric ducts into male accessory structures, such as epididymis, vas deferens and seminal vesicle. Probably the most potent is dihydrotestosterone (DHT), generated from testosterone in pores and skin and genital tissue by the action of 5α-reductase. A male fetus may be incompletely masculinized if this enzyme is deficient. It is because testosterone is transformed to the extra potent DHT by 5-alpha reductase. Sonnabend describes the symbiotic relationship between the three as one wherein he contributed medical and scientific info while Callen added the more political factors and Berkowitz, who had educated himself with Sonnabend's scientific archives for the sake of his personal therapy, synthesized the 2. Some have observed that this could also be due to two different patterns in parental communication with infants, noting that parents are extra doubtless to talk to women and extra probably to engage in bodily play with boys.
