Radioactive uptake of [14C]Erythromycin by control and fluoroquinolone-treated SIRC cells. Each point represents mean SD of 3 determinations. *Statistically significant from control at a P value of <0.05. SIRC, Statens Seruminstitut Rabbit Cornea; SD, standard deviation; S-OFX, ofloxacin-treated SIRC cells; S-GFX, gatifloxacin-treated SIRC cells; S-LFX, levofloxacin-treated SIRC cell.