title: Immunological studies after long-term H2-receptor-antagonist therapy.
mesh_terms: D000328:Adult; D005260:Female; D006635:Histamine H2 Antagonists / Q000008:administration & dosage* / Q000627:therapeutic use; D006801:Humans; D007959:Lymphocyte Culture Test, Mixed; D008214:Lymphocytes / Q000276:immunology*; D008297:Male; D013997:Time Factors
chemical_list: D006635:Histamine H2 Antagonists