Extended Data Fig. 6: Boxplot showing the distribution of Δ minor isoform ratio (minor/[minor+major]) between nuclear RNAs and total RNAs.

The sums of the number of minor and major isoform reads in both nuclear and total RNA samples are required to be more than 10. The p-values of one-sided Mann–Whitney U-tests are labelled in the figure. For the boxplots, the centre lines show the median, the box limits show the interquartile range and the whiskers extend to the furthest value within 1.5× the interquartile range from the quartiles. N: the number of isoforms.