“Every time I worked with a fetal liver, I imagined that somewhere in California a woman had made the agonizing, heartbreaking decision to end her pregnancy. Yet she had also donated her aborted fetus to medical research. I thought of this as I isolated the golden-tinged cells inside the vent hood. A promise had been made; these cells were not simply trash.” An interesting piece by a microbiologist on the use of fetal stem cells.