Figure 7. Proliferating cell nuclear antigen (PCNA) analysis in each group at 28 days post-op. A-D: Immunohistochemistry for PCNA: A: Group A, B: Group B, C: Group C, D: Group D. E: Quantitation of the number of PCNA positive cells in the subconjunctival space at post-op 28 days. *p<0.01 for treated (rapamycin) versus control (Group B and D; n=4). Original magnification: 200×.