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Proparacaine impact on corneal stromal fibroblast viability. The trypan blue cellular viability graph showing the effects of regular (0.5%) and diluted (0.05%) proparacaine on hCSF viability with or without the antibiotic environment. The experiments were performed in triplicate and error bars represent ± SEM. *P < 0.001 and #P < 0.01. hCSFs, human corneal stromal fibroblasts; SEM, standard error of the mean. Color images are available online.
