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J Immunol. 1985 Jun;134(6):3798-801.

Natural killer (NK) cells are present in mice with severe combined immunodeficiency (scid).


Spleen cells from C.B- 17 scid mice with severe combined immunodeficiency disease exhibit natural killer cell (NK) activity against YAC lymphoma targets in a standard 4-hr 51Cr release assay. The cytolytic activity is demonstrable only at high effector to target ratios but can be augmented at least sevenfold by the interferon inducer poly I:C. The pattern of target lysis is specific, because splenocytes from poly I:C-primed C.B-17 scid mice lyse NK-sensitive YAC cells and not the insensitive P815 mastocytoma. The presence of several NK-associated antigens on C.B-17 scid splenocytes was tested by pretreating cells with the appropriate antiserum plus complement before testing for NK activity. The results indicate that a proportion of NK effectors in C.B-17 scid mice bear surface NK 2.1 and Asialo GM1 but are negative for Thy-1.

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