<prompt> Cell type which lacks HLA antigen is -MonocyteThrombocytesNeutrophilRed blood cell  <response>: Class I products of the genes of the major histocompatibility complex MHC, HLA-A, -B, and -C, are present on viually all nucleated cells. Mature human red blood cells are not nucleated and do not generally have easily detectable HLA antigens, Reff: 