HistiocytesSea-Blue Histiocyte SyndromeLymphocytesHistiocytosisLymphocyte ActivationHistiocytosis, Non-Langerhans-CellHistiocytosis, SinusHistiocytic SarcomaHistiocytosis, Langerhans-CellHistiocytic Disorders, MalignantErdheim-Chester DiseaseLymphatic DiseasesT-LymphocytesLymph NodesLymphocyte SubsetsGranuloma, Plasma CellHistiocytoma, Benign FibrousB-LymphocytesLymphocyte CountGranulomaPanniculitisLymphohistiocytosis, HemophagocyticEpithelioid CellsLymphadenitisMalacoplakiaXanthomatosisMycobacterium scrofulaceumHistiocytic Necrotizing LymphadenitisSpleenLymphomaImmunoenzyme TechniquesHodgkin DiseaseBiopsyImmunohistochemistryLymphocyte Culture Test, MixedLymphoid TissueAntibodies, MonoclonalAntigens, CDHistocytochemistryLymphocytes, Tumor-InfiltratingMononuclear Phagocyte SystemPhytohemagglutininsRheumatoid NoduleMacrophagesT-Lymphocytes, CytotoxicSplenomegalySkin DiseasesLymphocyte TransfusionCells, CulturedBone MarrowSkin