plasma cells isolated from bone marrow ( bm ) aspirates of 12 patients with multiple myeloma ( mm ) and nine patients with monoclonal gammopathy of undetermined significance ( mgus ) were analyzed for production of cytokines with bone-resorbing activity , such as interleukin-1 ( il-1 ) , tumor necrosis factor ( tnf ) , and lymphotoxin ( lt ) .
C0032112
plasma cells
C0026470
monoclonal gammopathy of