The protein expression of FAK, Src, and their corresponding phosphorylated forms p-FAK-Tyr407, p-Src-Tyr529 and p-Src-Tyr416 in normal skin fibroblasts (NF) and hypertrophic scar fibroblasts (HF) were examined (Fig. 2A–C). This evidence concerns the gene PTK2 and hydrops fetalis.