Then, the culture was treated with cytosine arabinoside (Ara-C) and the purified OECs were received. These cells were enriched by addition of bovine pituitary extract (BPE) to the culture medium.

• 运用阿糖胞苷(Ara-C)处理这些细胞培养物从而纯化出OECs,再用含牛垂体提取物(BPE)的培养液对细胞进行扩大培养。