Scientists have detected microplastics — the tiny and pervasive fragments now found in our seas, drinking water, food and, increasingly, living tissue — in human semen and follicular fluid, according ...

Seminal fluid contains protein factors that, when transferred from a male to a female at mating, affect reproductive success. This is true of many different animals, from crickets to primates. In ...

As males age their reproductive success typically declines. A study in fruit flies, led by University of Oxford researchers has found that while old males do produce fewer offspring than young males, ...

Imagine itching, burning, swelling, or even struggling to breathe just moments after sex. For a small but growing number of women, that's not an awkward anecdote—it's a medical condition. It's called ...

Production of foreign proteins in the tissues of transgenic animals represents an efficient and economical method of producing therapeutic and pharmaceutical proteins. In this study, we demonstrate ...