tokens: In addition , all three Opa proteins of C751 bind equally well to HeLa cells transfected with cDNA encoding the carcinoembryonic antigen [ CEA ( CD66e ) ] subgroup of the CD66 family , but show distinct tropism for CGM1- ( CD66d ) and NCA ( CD66c ) - expressing cells .
folded_tokens: in addition , all three opa protein of c751 bind equally well to helum cell transfect with cdna encode the carcinoembryonic antigen [ cea ( cd66e ) ] subgroup of the cd66 family , but show distinct tropism for cgm1-_NN ( cd66d ) and nca ( cd66c ) - express cell .