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The FASEB Journal, Vol 4, 101-104, Copyright © 1990 by The Federation of American Societies for Experimental Biology

RESEARCH COMMUNICATIONS

Effects of spaceflight on the spermatogonial population of rat seminiferous epithelium

WJ Sapp, DE Philpott, CS Williams, K Kato, J Stevenson, M Vasquez and LV Serova
Tuskegee University, Alabama 36088.

Testes from rats flown on Cosmos 1887 were compared with vivarium control and synchronous control samples. The mean weights of flight testes, normalized for weight per 100 g, were 6.4% less when compared with the vivarium controls. Counts of spermatogonia from tissue sections (seminiferous tubules in maturation stage 6) from five animals in each group revealed 4% fewer spermatogonia in flight testes compared with synchronous controls and 11% fewer spermatogonia in flight samples compared with vivarium controls.


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Copyright © 1990 by The Federation of American Societies for Experimental Biology.