TBCE and keratoconus: To investigate the effect of active ingredients of SSB extract (quercetin, kaempferide, and isorhamnetin) on LPS-induced rat hepatocyte–KC inflammation and cell proliferation inhibition rate, hepatocyte–KCs were respectively incubated at various concentrations of quercetin, kaempferide, and isorhamnetin (25, 50, and 100 μg/ml) and LPS (1 mg/l) for 24 H.