immunoprecipitation experiments using anti-peptide antisera prepared against exon 6 , exon 7 and exon 8-encoded intracytoplasmic regions of the h-2kb gene product indicated that approximately 1/3 of the h-2kb heavy chains in a cell surface-labelled glycoprotein fraction from el-4 cells , or h-2b spleen cells , is not associated with beta 2-microglobulin ( beta 2-m ) .
C0015295
exon
C0007634
cells