Analysis of single IRIF. (A) The correlation of maximum IRIF area and maximum IRIF intensity. Orange circles and green triangles represent single IRIF in the IR+HT group and the IR group, respectively. (B) The average intensity of unrepaired IRIF (red squares) and ‘disappeared’ (i.e. repaired) IRIF (blue dots) in the IR+HT group at indicated times. (C) The correlation of maximum IRIF intensity and maximum IRIF area in the IR+HT group. Red squares and blue circles represent single unrepaired IRIF and ‘disappeared’ (i.e. repaired) IRIF, respectively.