Methods Activin A levels in serum were detected by RIA and follistatin levels in serum were detected by ELISA.

• 方法采用放射免疫测定(RIA)检测健康成年人及患者外周血激活素A水平，酶联免疫吸附试验(ELISA)检测健康成年人及患者外周血卵泡休止素水平。