we recently reported the existence in murine cells of a fourth class of mhc-linked polypeptides which are biochemically and genetically distinct from previously identified mhc gene products : balb.b anti-balb/c ( anti-h-2d ) antiserum immunoprecipitates a set of 16 cytoplasmic low-molecular weight polypeptides ( lmp ) from balb/c spleen cells and from the wehi-3 cell line .
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cytoplasmic
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cells