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Journal of Endocrinology (1972) 54, 465-471    DOI: 10.1677/joe.0.0540465
© 1972 Society for Endocrinology

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ANDROGEN-INDUCED CELL PROLIFERATION AND DIFFERENTIATION IN THE SEMINAL VESICLE AND COAGULATING GLAND OF THE CASTRATED MOUSE

A. R. MORLEY and N. A. WRIGHT

Castrated male mice were injected with 250 µg testosterone propionate on 3 consecutive days. With the third injection, 1 µCi tritiated thymidine/g body weight was given intraperitoneally. A pulse-chase analysis in the seminal vesicle and coagulating gland was performed during the next 50 h and labelling and mitotic indices were obtained.

One hour after the injection of tritiated thymidine the labelling index was 19% in the seminal vesicle and 13% in the coagulating gland. The mitotic index was 1·7% in the seminal vesicle and 1·4% in the coagulating gland.

The observed cell cycle (Tc) duration in the seminal vesicle was 25 h, and the duration of DNA synthesis (ts) was 9 h. The calculated duration of mitosis (tm) was 0·6 h, the presynthetic duration (tG1) was 14·2 h, and the postsynthetic duration (tG2) 1·2 h. Forty-eight hours after testosterone propionate the growth fraction was 0·62 and a decycling ratio of 0·8 was calculated. In the coagulating gland Tc was 52·0 h, ts 9·0 h, tm 1·0 h, tg1 41·0 h and tG2 1·0 h.




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