Plasma CellsMultiple MyelomaAmyloidosisImmunoglobulin Light ChainsParaproteinemiasCell ProliferationLeukemia, Plasma CellNeoplasms, Plasma CellCell DivisionPlasmaCells, CulturedCell DifferentiationSignal TransductionCell Line, TumorApoptosisGranuloma, Plasma CellCell CycleB-LymphocytesImmunohistochemistryRNA, MessengerPlasmacytomaCell SurvivalCell LineMice, Inbred C57BLBromodeoxyuridineFlow CytometryLymphocyte ActivationCell MovementBlotting, WesternReverse Transcriptase Polymerase Chain ReactionTime FactorsTumor Cells, CulturedMice, KnockoutSyndecan-1PhosphorylationDose-Response Relationship, DrugGene Expression Regulation, NeoplasticGene Expression Regulation