A new report in The Lancet shows that vaginas can successfully be grown in a lab from women’s own cells and implanted in their bodies. Four young women in the U.S. born with missing or abnormal vaginas have undergone the transplant process, which involves taking a biopsy from the not fully formed vulva and growing the vagina in a bioreactor. Follow-up tests indicate that the lab-grown organs are functioning normally. The women report normal levels of "desire, arousal, lubrication, orgasm, satisfaction" and painless intercourse. Although none have conceived yet, they are menstruating, which suggests pregnancy will be possible.