Fig. 3From: Intronic position +9 and −9 are potentially splicing sites boundary from intronic variants analysis of whole exome sequencing dataDistribution of raw intronic variants number. The variant number of the +2 and −2 positions was 14,744 which was less than the +1 and −1 positions. After the second position, these variant number gradually raised, then reached the largest number 136,241 at the +9 and −9 positions. Then the number gradually and gently decreased with ups and downs, before the +149 and −149 positions the descent slope was smaller, after that the descent slope was close to −1Back to article page