Fig 1. The capability of orbital fibroblasts to secret IL-6 in response to proinflammatory cytokines, IL-1β.

Orbital fibroblasts were pre-treated with or without EGCG for 1 h, followed by treatment with IL-1β (10 ng/mL) for 24 h. The level IL-6 was determined by ELISA (R&D Systems, Minneapolis, MN). *p < 0.01 between the indicated groups as calculated by Student’s t-test. P, number of passages.