Figure 4. Representative images for MUC5AC staining in the conjunctiva. In the conjunctival fornix, more MUC5AC positive cells in the control group (A) were observed than that of the BAC-treated group (B), while none was recorded in the bulbar conjunctiva near limbus (C). The average number of MUC5AC positive cells was significantly decreased after BAC treatment (D). **p<0.01.