FIG. 3. a–d.

IL-1β (a), IL-6 (b), TNF-α (c) and IL-10 (d) secretion as assessed by ELISA in the culture of 10.014 pRSV-T human normal corneal cells after 24 h of incubation with the methanol, ethyl acetate and heptane extracts of E. officinalis L. Two concentrations of the extracts were used: 8 μg/mL and 20 μg/mL. ^*p≤0.01 - culture of corneal cells treated with plant extracts compared to the non-treated culture control