Ⅲ:Twelve rats were given hexamethonium first,then 6 were g.
③大鼠12只,先注射神经节阻断剂六甲双胺10mg/kg,血压和心率稳定后,其中6只注射Leptin100μg/kg,另6只注射生理盐水作为对照。
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