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B-Lymphocyte Development and Neoplastic Equivalents This shows the normal pattern of lymphoid cell development from an immature bone marrow lymphoblast precursor, through the lymph node stages, to the final endpoint of a plasma cell. The exact stages and progression of this maturing process are unknown, and thus aspects of this depiction may be controversial. This shows the neoplastic equivalents of the normal lymphoid cells superimposed on a diagram of the natural habitat of the normal cells. Table of Contents