( 130 mum ) produced a marked and significant enhancement of the responses of the trachea to the three catecholamines dl-isoprenaline ( i ) , 1-noradrenaline ( n ) , 1-adrenaline ( a ) , a slight but significant enhancement of the responses of the trachea to the two non-catechol beta sympathomimetics salbutamol ( s ) , and orciprenaline ( o ) , but no significant enhancement of the responses to aminophylline ( am ) .
C0007412
catecholamines
C0022245
isoprenaline