instillation of lidocaine hydrochloride ( xylocaine ) into the isolated tracheal segment blocked cough caused by mechanical stimulation of the segment , but carinal stimulation still caused constriction of the segment under these conditions which indicated that afferent , but not effrent parasympathetic innervation of the segment had been blocked selectively .
C0546869
lidocaine hydrochloride
C0699094
xylocaine