Ericsson's family ran a cattle ranch, and the doctor spent considerable time and effort in trying to find a way to breed more males, whose meat is particularly prized by steak eaters.
正因生男育女是一個難解的謎，於是吸引更多人前仆後繼地摸索、嚐試。新興的「精蟲分離術」就是在這條潺潺前行的溪流中，激起的亮麗水花。羅納．艾利松是美國加州的一位生殖生理學家。他家裡擁有一片大牧場，專飼肉牛。