| lymphoblast | <haematology> Often referred to as a blast cell. Unlike other usages of the suffix blast a lymphoblast is a further differentiation of a lymphocyte, T or B, occasioned by an antigenic stimulus. The lymphoblast usually develops by enlargement of a lymphocyte, active re entry to the S phase of the cell cycle, mitogenesis and production of much mRNA and ribosomes. (18 Nov 1997) |
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| lymphoblastic | Pertaining to the production of lymphocytes. (05 Mar 2000) |
| lymphoblastic leukaemia | Acute lymphocytic leukaemia in which the abnormal cells are chiefly (or almost totally) blast forms of the lymphocytic series, or in which unusually large numbers of the immature forms occur in association with adult lymphocytes. (05 Mar 2000) |
| lymphoblastic lymphoma | <tumour> A diffuse lymphoma in children, with supradiaphragmatic distribution and T lymphocytes having convoluted nuclei; many patients develop acute lymphoblastic leukaemia. (05 Mar 2000) |
| lymphoblastoma | <tumour> A form of malignant lymphoma in which the chief cells are lymphoblasts. Origin: Lymphoblast + G. -oma, tumour (05 Mar 2000) |
| lymphoblastosis | The presence of lymphoblasts in the peripheral blood; sometimes used as a synonym for acute lymphocytic leukaemia. Origin: Lymphoblast + G. -osis, condition (05 Mar 2000) |