Lymphoblasts

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lymphoblast

(Science: 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.