The testicles, or testes, are important for the production and storage of sperm until they’re mature enough for ejaculation. They also produce testosterone, which is responsible for sex drive, ...

DALLAS – Nov. 20, 2003 – Researchers at UT Southwestern Medical Center at Dallas have shown that insulin family signaling is important for male sex determination, a discovery that furthers the ...

My 2013 book, How We Do It, addressed an enduring mystery in mammal reproduction: “It is often claimed that the word ‘testify’ comes from an ancient Roman custom in which a man would clutch his testes ...

In a recent study posted to the medRxiv* pre-print server, researchers used a suite of methods to detect severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) in the testis of patients who died ...