HistiocytesSea-Blue Histiocyte SyndromeHistiocytosisCell ProliferationHistiocytosis, Non-Langerhans-CellHistiocytosis, SinusHistiocytic SarcomaHistiocytosis, Langerhans-CellHistiocytic Disorders, MalignantErdheim-Chester DiseaseLymphatic DiseasesGranuloma, Plasma CellImmunohistochemistryLymph NodesHistiocytoma, Benign FibrousGranulomaPanniculitisNeutrophil InfiltrationCells, CulturedLymphohistiocytosis, HemophagocyticEpithelioid CellsXanthomatosisMalacoplakiaLymphadenitisImmunoenzyme TechniquesBiopsyMycobacterium scrofulaceumHistiocytic Necrotizing LymphadenitisMacrophagesSignal TransductionMice, Inbred C57BLApoptosisCell DivisionT-LymphocytesLymphomaHistocytochemistrySkinCell DifferentiationCell MovementCell Line, TumorHodgkin DiseaseLymphocytesSkin DiseasesMononuclear Phagocyte SystemCell CycleMice, KnockoutRNA, MessengerAntigens, Differentiation, MyelomonocyticFatal OutcomeLymphocyte ActivationDisease Models, AnimalAntigens, CDStaining and LabelingRheumatoid NoduleBone MarrowAntibodies, MonoclonalSplenomegaly