MEF, STO, BEF and HEF feeders all can promote growth of bovine EG cells in vitro, but STO is the best, HEF is the last and MEF, BEF is in the middle.

• MEF、STO、BEF及HEF饲养层均能促进牛EG细胞体外增殖，但STO效果最好，MEF及BEF次之，HEF效果最差。