Dispelling the illusions of simplicity.
D000818:Animals; D001491:Basophils / Q000276:immunology; D002450:Cell Communication; D008214:Lymphocytes / Q000276:immunology; D008222:Lymphokines / Q000276:immunology; D008262:Macrophage Activation; D008264:Macrophages / Q000276:immunology*; D008407:Mast Cells / Q000276:immunology
D008222:Lymphokines