The extracted eggs and cleanly processed sperm cells are placed in a petri dish for fertilization. They must be cultivated for 48 hours in a petri dish that is perfectly compatible with the internal environment of the human body (37 ℃, 5 % CO2, 100 % humidity). After two to four eggs are fertilized, the embryos are implanted in the mother's womb and allowed to stabilize and grow.
將取出的卵子與經過清洗處理的精子放入培養皿中受精，在與人體環境相同的培養箱裡（攝氏卅七度、五％的二氧化碳、百分之百的濕度）培養約四十八小時，當受精卵分裂成二至四個細胞時，再將胚胎植入母體子宮中，讓胚胎著床、發育。