Sperm and EggToday marks the birthday of Louise Brown, the world’s first “test-tube baby.” Her birth in 1978 heralded a new era of fertility services for many women, including lesbians. Helen and I conceived our own son this way, using my egg and her womb, so we bear a personal debt to Ms. Brown, her parents Lesley and John Brown, and their doctors, Patrick Steptoe and Robert Edwards. Thanks! You’ve helped create many happy families.