<unk> smacytoma, multiple myeloma, Waldenström macroglobulinemia, heavy chain disease, and<unk>  leukemia are malignant neoplasms ("cancer") of the<unk> s. Multiple myeloma is frequently identified because malignant<unk> s continue producing an antibody, which can be detected as a paraprotein. Common variable immunodeficiency is thought to be due to a problem in the differentiation from lymphocytes to<unk> s. The result is a low serum antibody level and risk of infections. Primary amyloidosis (AL) is caused by the deposition of excess immunoglobulin light chains which are secreted from<unk> s.
Plasma cell
Prolymphocyte
Monocyte
Reactive lymphocyte
Thymocyte
Podocyte
Dendritic cell
Koilocyte