Infertility is a worldwide clinical problem for human health that affects 8 to 12 percent of couples. A new study from Washington University in St. Louis has implications for understanding some ...

Two pre-prints, one from Canada the other from Hong Kong and China, provide convincing evidence that SARS-Cov-2 infects and damages male reproductive organs in monkeys and hamsters. The work helps to ...

Older male rhesus monkeys sire fewer offspring, even though they appear to be mating as much as younger monkeys with similarly high social status. Sperm quality or quantity, or the survival of infants ...