Reduction of the spermatogonial population in rat testes flown on Space Lab-3.

摘要: Quantization of the testicular spermatogonial population reduction in six rats is performed 12 hours after their return from seven days aboard Space Lab-3. The observed 7.1 percent organ weight loss, and 7.5 stage cell comparison with control correlate very well. Accurate dosimetry was not conducted on board, but radiation can be considered primary cause change. decrease protein kinase heart these indicates that stress adapting to weightlessness, final jet flight, or other sources, an important factor.