Expansion of cytotoxic CD56bright NK cells during T cell deficiency after allogeneic hematopoietic stem cell transplantation

We describe a compensatory expansion of activated cytotoxic CD56bright NK cells during T-cell deficiency after hematopoietic stem cell transplantation. This mimics the situation in severe inborn T-cell deficiencies and unmasks the functional and phenotypic versatility of NK cells.

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