11. There is a dense infiltrate of plasma cells , other lymphocytes and macrophages. 12. It is CD20 negative, and has an immunophenotype that resembles plasma cells . 13. Hematological malignancies may derive from either of the two major NK and plasma cells . 14. "Plasma cell dyscrasia " is sometimes considered synonymous with paraproteinemia or monoclonal gammopathy. 15. The cells involved are macrophages, mast cells, fibroblasts, and plasma cells . 16. The hallmarks of the disease are fibrosis and infiltration by IgG4 secreting plasma cells . 17. Shekhar suffered from multiple myeloma, a form of cancer of the plasma cell . 18. Antibodies are produced by a type of white blood cell called a plasma cell . 19. These include B lymphocytes, and plasma cells . 20. The plasma cells in the culture eventually die from senesence, leaving pure hybridoma cells.
