Hybridization of 293-BK cell DNA with labelled BKV DNA or with complementary RNA indicates that the viral genome or BK viral DNA sequences are present in 293-BK cells.

• 293-BK细胞DNA与标记的BKV DNA或互补RNA的杂交试验提示；病毒基因组或BKV DNA顺序存在于293-BK细胞中.