`Twist theory' for the roles of estrogen and testosterone in the process of spermatogenesis
Received 9 November 2001; accepted 13 February 2002.
Abstract
Estrogen and testosterone have different effects on different steps of spermatogenesis and for each step optimal levels of estrogen and testosterone are different. The effects of these hormones behave as if `twisted' from one end to the other end of the spectrum of steps of spermatogenesis. A graphic model is presented to explain this `Twist Theory'.
Calcutta, India
Correspondence to: Purushottam Sah DGO, Postgraduate diploma in obstetrics and gynecology, Arogya Niketan Private Limited, A-2, Kishan Abason, Verma Road, Uttarpara-712258, Calcutta, India. Phone: +91-33-663-8569
ABSTRACT