As previously described, the expression of these inflammatory factors was minimal in normal conjunctival tissues but was significantly elevated in pterygium tissues (Figure 3), Moreover, the protein levels of TGF-β1 and VEGF in pterygium tissues from group II after MMC injection were significantly lower than those in tissues from group I (Figures 3(a) and 3(b)). Here, TGFB1 is linked to pterygium.