T Lymphoblastic Leukemia:

T-ALL is diagnosed if there is cytoplasmic or surface CD3 expression and does not fulfil the criteria to diagnose acute leukemia of ambiguous lineag.


Fig 1. T-ALL. Blasts (red) are positive for CyCD3 and TdT. T-cells (dark blue) can be used as positive control. Normal B-cells (green) can be used as negative control.

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