Effect of alloxan on the viability of RINm5F cells
In order to find the suitable concentration of alloxan for induction of 50 % cell damage, RINm5F cells with density of 2×105 cells/well were seeded in 96-well plates and then treated with alloxan at a range of concentrations 0–15 mM (dissolved in 50 mM citrated buffer pH 3.0). After 1 h of incubation, the medium was removed and then cells were additional incubated for 23 h. At the end of experiment, cell viability was assessed by MTT assay as described in the previous section.