abnormal lymphopoiesis MP:0000310 MP:0001640 MP:0001880 MP:0002401 MP:0008110 MPheno.ontology abnormal lymphocyte differentiation atypical formation of lymphocytes and plasma cells from lymphoid stem cells which develop from the pluripotent hematopoietic stem cells in the bone marrow; lymphoid stem cells differentiate into T-lymphocytes; B-lymphocytes; plasma cells; or NK-cells (natural killer cells), depending on the organ or tissues to which they migrate lymphopoiesis abnormalities abnormal lymphocyte morphology abnormal leukopoiesis