compared with the nks parental k562 tumor cells , the nkr butyrate-induced cells had 3.6- to 4.0-fold higher sialo-transferase activities and were associated with significantly greater amounts of cell surface sialic acid detected both in sialyl glycoproteins ( 2.2- to 2.9-fold higher ) and particularly within ganglioside extracts ( 6.2- to 13.6-fold higher ) .
C0007634
cells
C0699040
of cell