A human egg has been filmed in close-up emerging from the ovary for the first time, captured by chance during a routine operation.
Fertile women release one or more eggs every month, but until now, only animal ovulation has been recorded in detail.
Gynaecologist Dr Jacques Donnez spotted it in progress during a hysterectomy.
The pictures, published in New Scientist magazine, were described as “fascinating” by a UK fertility specialist.