title: The earloe algesimeter. 2. The effect on pain threshold of certain phenothiazine derivatives alone or combined with meperidine.
mesh_terms: D006801:Humans; D006993:Hypnotics and Sedatives / Q000494:pharmacology*; D008614:Meperidine / Q000494:pharmacology*; D010146:Pain; D010640:Phenothiazines / Q000494:pharmacology*; D011398:Promethazine / Q000494:pharmacology*
chemical_list: D006993:Hypnotics and Sedatives; D010640:Phenothiazines; D008614:Meperidine; D011398:Promethazine