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Science 18 February 1972:
Vol. 175. no. 4023, pp. 769 - 770
DOI: 10.1126/science.175.4023.769
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Articles

Spermatogenesis in Cultured Testes of the Cynthia Silkworm: Effects of Ecdysone and of Prothoracic Glands

Michael P. Kambysellis 1 and Carroll M. Williams 1

1 Biological Laboratories, Harvard University, Cambridge, Massachusetts 02138

In vitro spermatogenesis takes place when intact testes are cultured in blood plasma containing ecdysone or certain other steroids possessing ecdysone activity. The ecdysone requirement can be satisfied by culturing the testes in the presence of living, active prothoracic glands. The most likely explanation of these results is that the prothoracic glands constitute the principal source of ecdysone.


THIS ARTICLE HAS BEEN CITED BY OTHER ARTICLES:
Larval Testes of the Tobacco Budworm: A New Source of Insect Ecdysteroids.
M. J. LOEB, C. W. WOODS, E. P. BRANDT, and A. B. BOAKOVEC (1982)
Science 218, 896-898
   Abstract »    PDF »
Biosynthesis of agr and beta-Ecdysones from Cholesterol outside the Prothoracic Gland in Bombyx mori.
K. Nakanishi, H. Moriyama, T. Okauchi, S. Fujioka, and M. Koreeda (1972)
Science 176, 51-52
   Abstract »    PDF »


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Science. ISSN 0036-8075 (print), 1095-9203 (online)