What they found is that, after mere months of HRT, trans women’s bodies may change down to the molecular level.

“This highlights that human biology is malleable and that even in adulthood, our bodies respond to sex hormone changes,” co-author Dr. Boris Novakovic said in a press release about the project. In other words, the endeavor shows the true range and plasticity of human bodies, including the idea of sex, which many gender conservatives falsely argue is immutable, binary, and stagnant.

This also matches fairly well with another study that found trans men can develop vaginal prostate tissue after taking testosterone.