tokens: Conventionally , four nominal allotypic variants , b4 , b5 , b6 and b9 have been shown to be co dominantly expressed at the Ckappa1 gene locus .
folded_tokens: conventionally , four nominal allotypic variant , b4 , b5 , b6 and b9 have be show to be co dominantly express at the ckappa1 gene locus .