Antibodies, HeterophileAntigens, HeterophileInfectious MononucleosisForssman AntigenMacrophagesImmunoconglutininsAntigensMacrophage ActivationHemagglutination TestsLatex Fixation TestsMacrophages, PeritonealFalse Positive ReactionsImmunoassayAntigens, BacterialMacrophages, AlveolarAntigens, NeoplasmAntigens, SurfaceImmunoglobulin GImmunoglobulin MHerpesvirus 4, HumanReagent Kits, DiagnosticAntigens, ViralAntibodies, ViralPhagocytosisCells, CulturedAntigens, CDAntigens, ProtozoanMice, Inbred C57BLMacrophage Colony-Stimulating FactorCell LineAntigens, Polyomavirus TransformingLipopolysaccharidesHLA AntigensMice, Inbred BALB C