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

结咳露使咳嗽潜伏期延长,使气酚红排泌量显增加。

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

采用浓氨水诱咳法、酚红排泌法和气条法研究镇咳、祛痰和平喘作用。