“…There is evidence that some inhibitors of plain muscle interfere with the release of histamine and in this way block yet another stage ofthe anaphylactic reaction, e.g. both adrenaline (Schild, 1936) and ether (Katz, 1940) inhibit the release of histamine from guinea-pig lungs in anaphylaxis. Salicylates also inhibit histamine release (Trethewie, 1951;Haining, 1956).…”