RESULTS Zhike syrup obviously prolonged the incubation period of coughing and increasel the bronchotracheal secretion of phenol red.

结果止咳露使咳嗽潜伏期延长,使红排泌量显增加。

The method of strong aqua ammoniac induced cough,the method tracheal spiral line and phenolsulfonphthalein excretion test were used.

采水诱咳法、红排泌法和螺旋条法研究镇咳、祛痰和平喘作。