Figure 2: PKD1 promoted the survival of flaps. (A) Flap digital photographs were taken on the third & seventh PODs in the studied groups. (B) Histogram of survival area percentages in each group. (C) POD 7 digital photographs of tissue edema (inner face) in the studied groups. (D) Histogram of the percentage of water content in the skin flap tissue on the seventh PODs. (E) Flap angiography was performed on the seventh PODs in all three groups. (F) LDBF imaging of blood flow in the flap on the third and seventh PODs in the studied groups. (G) Histogram of the quantified blood flow signal intensity on the 3rd and 7th PODs. *p < 0.05 and **p < 0.01, vs control group. Mean ± SEM was used for data presentation, n = 6 per group.