Leukemia, Plasma CellPlasma CellsMultiple MyelomaParaproteinemiasLeukemia, Hairy CellSyndecan-1PlasmacytomaBence Jones ProteinBone MarrowLeukemiaNeoplasms, Plasma CellB-LymphocytesInterleukin-6Chromosomes, Human, Pair 14Cell Line, TumorBoronic AcidsPyrazinesBone Marrow CellsPlasmaTumor Cells, CulturedNeoplasm ProteinsMelphalanLeukemia, Myeloid, AcuteApoptosisFlow CytometryImmunophenotypingOligonucleotide Array Sequence AnalysisImmunoglobulin Heavy ChainsCell DivisionThalidomideGene Expression ProfilingLeukemia, Lymphocytic, Chronic, B-CellGranuloma, Plasma CellLeukemia, LymphoidDexamethasoneTranslocation, Genetic