passages.id: split_6_test_97_passage
passages.type: progene_text
passages.text: Moreover , expression of HBx resulted in a reduction of NER efficiency in RKO cells to 52 +/- 2 % ( compared with control ) , RKO-143a1a cells to 46 +/- 3 % and RKO - E6 cells to 60 +/- 3 % .