In 25 paired tissues of patients in stage A2-D, the expression of SRC in 22 (88%) of liver cancer tissues was higher than that in adjacent normal tissues, of which 19 pairs (86.3%) highly expressed SRC (> 2 times), while 3 pairs (15.7%) did not have as high expression levels (< 2 times; Fig. 2L). This evidence concerns the gene SRC and liver cancer.