MacrophagesHartmannellaAntigensMacrophage ActivationMacrophages, PeritonealAntigen-Presenting CellsAntigens, SurfaceAntigens, BacterialMacrophages, AlveolarT-LymphocytesAntigens, NeoplasmLymphocyte ActivationAccessory NerveAntigens, ViralCells, CulturedHistocompatibility Antigens Class IIAntigens, CDMice, Inbred C57BLMonocytesSpleenPhagocytosisAntibodies, MonoclonalTrinitrobenzenesMice, Inbred BALB CCell LineLymphocyte CooperationHLA-DR AntigensH-2 AntigensConcanavalin AInterferon-gammaB-LymphocytesLipopolysaccharidesMice, Inbred C3HAntigens, ProtozoanMacrophage Colony-Stimulating FactorDendritic CellsCell SeparationAntigens, CD3Antigens, Polyomavirus TransformingHLA AntigensEpitopesLymphocyte Culture Test, MixedMice, Inbred StrainsPeritoneal CavityInterleukin-2CytokinesInterleukin-1Molecular Sequence DataMajor Histocompatibility ComplexReceptors, Antigen, T-CellAntigens, FungalBone Marrow CellsHistocompatibility AntigensLymphocytesHemocyaninMice, Inbred CBAAntigens, HelminthFlow CytometryCell DivisionAntibody FormationHLA-D AntigensWolff-Parkinson-White SyndromeCytotoxicity, ImmunologicAccessory Atrioventricular BundleRecombinant ProteinsMacrophage Migration-Inhibitory FactorsT-Lymphocytes, Helper-InducerReceptors, FcMice, KnockoutTumor Necrosis Factor-alphaAntigenic ModulationRNA, MessengerGenes, MHC Class IIFicollImmunity, CellularCarcinoembryonic AntigenClone CellsImmunoglobulin GAntigens, DifferentiationCell DifferentiationAntigens, T-IndependentAntigens, Viral, TumorColony-Forming Units AssayTime FactorsAntigens, CD80CD4-Positive T-LymphocytesInterleukin-1 Receptor Accessory ProteinEnzyme-Linked Immunosorbent AssayProliferating Cell Nuclear AntigenHistoplasminAntigen-Antibody ReactionsAntigens, Differentiation, T-LymphocyteAntigens, CD2PhytohemagglutininsFluorescent Antibody TechniqueSignal TransductionKiller Cells, NaturalAmino Acid SequenceMembrane GlycoproteinsHematopoietic Stem Cells