鲫鱼尾垂体抽提液,可引起鳜鱼离体肠段或肠段纵行肌的节律性收缩。它的收缩效应具高度敏感性井和剂量相关。每毫升浸液0.05个尾垂体就能引起可重复的收缩反应。因此,我们建议用分离的鳜鱼肠段来取代鲑鳟鱼的直肠,以建立尾垂体紧张素II的生物测定方法。乙酰胆碱可作为实验室参考标准。 Crucian carp pituitary extract, can cause pike fish intestinal segment intestinal or intestinal longitudinal rhythmic contraction. Its contraction effect is highly sensitive and dose-related. 0.05 ml of pituitary infusion per milliliter can cause repeatable contractile response. Therefore, we propose replacing the salmon’s rectum with a separate gut’s intestine to establish a bioassay method for caudate pituitary II. Acetylcholine can be used as a laboratory reference standard.