Method:The method of strong aqua ammoniae induced cough and sulfur dioxide induced cough,the method of tracheal volume and tracheal spiral line,and phenolsulfonphthalein excretion test.

• 方法:分别采用浓氨水诱咳法、二氧化硫诱咳法、气管容积法、气管螺旋条法和酚红排泌法。结果:高、低剂量的CDCA均能极显著地抑制浓氨水及二氧化硫所致小鼠咳嗽潜伏期和咳嗽次数;