(2)LTR(long terminal repeat)插入 强启动子 (a)Promoter insertion Exon 2 Exon 3 LTH Viral c-mye c-myc 3 hgth9ngepmotadthom RNA (b)Enhancer insertions Exon 2 Exon 3 LTR Viral genes c-mye c-mye RNA transe Enhancer influcnco s but