after h1-blockade , the relaxant responses to histamine on ferret bronchus and trachea , and rat trachea were not affecte by `` '' specific '' '' doses of burimamide , metiamide , and cimetidine ( h2-receptor antagonists ) , indomethacin ( pg-synthetase inhibitor ) and propranolol ( a beta-adrenoceptor blocker ) .
C0008783
d cimetidi
C2757005
( h2-recept