title: Two categories of lymphocyte unresponsiveness to phytohemagglutinin.
mesh_terms: D006801:Humans; D007165:Immunosuppression Therapy; D007251:Influenza, Human / Q000276:immunology; D037102:Lectins / Q000494:pharmacology*; D008213:Lymphocyte Activation; D012507:Sarcoidosis / Q000276:immunology; D013936:Thymidine / Q000378:metabolism; D014316:Tritium
chemical_list: D037102:Lectins; D014316:Tritium; D013936:Thymidine