A method for preparation of purified human PWM stimulated B lymphoblasts and their usefulness as targets in CML is described. The purified B lymphoblasts were found to carry surface membrane immunoglobulin (SmIg) and HLA-DR antigens and were non E-rosette forming. In contrast, PHA-stimulated lymphoblasts were found to be E-rosetting, SmIg negative and without serologically detectable HLA-DR antigens, and thus were characterized as T lymphoblasts. Using B and T lymphoblasts in parallel as targets in CML, it was possible to demonstrate target determinants exclusively expressed by the B lymphoblasts.
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Hans Erik Johnsen (1980) studied this question.
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