Fig. 4From: Enhancement of scutellarin oral delivery efficacy by vitamin B12-modified amphiphilic chitosan derivatives to treat type II diabetes induced-retinopathyCytotoxicity and biological toxicity induced by Chit-DC and Chit-DC-VB12. a CCK-8 cytotoxicity assay was performed in Caco-2 cells. The results are shown as the mean ± SD for three independent trials. b Zebra fish embryo development under standard/healthy conditions (hpf = hours post-fertilization). c Zebra fish embryo development after 24, 48, 72, 96 hpf of incubation with different concentrations of Chit-DC and Chit-DC-VB12Back to article page