A transgender woman has been able to breastfeed a baby in the first recorded case of its kind, researchers say.
The 30-year-old wanted to breastfeed after her pregnant partner said she did not want to do it herself, according to the Transgender Health journal.
She was able to breastfeed after taking a course of drugs and breast pumping, the US case report said.
A UK expert said the "exciting" research could lead to more cases of transgender women breastfeeding.