Fig. 5
From: A comparative study of the epithelial regeneration capacities of two biomaterials in vitro
Evaluation of protein production by oral epithelial cells on different substrates. IL-8 protein production by Ca9-22 cells cultured on different materials after 3, 7 and 14 days was quantitatively measured using ELISA. The Y-axis shows the IL-8 concentration in the conditioned medium, with data from 5 independent donors presented as mean ± SD. Differences between indicated groups at the same time point are indicated by * and ** for p < 0.05 and p < 0.01, respectively