Figure 1: RT-4 cells were treated with the vitamins at their CD90 doses VC (8,750μM), K3(90μM) and VC:K3 (520μM:5.2μM) and harvested at one hour intervals for 5 h and assayed for lipid peroxidation using the thiobarbituric acid method. Malondialdehyde (MDA) production was monitored fluorimetrically and data was expressed as nM MDA per mg of protein and calculated based on an MDA standard curve. Values are the mean ± standard error of the mean of three experiments with three readings per experiment and compared to the control. VC:K3 treatments resulted in significant amounts of lipid peroxidation compared to control (P<<0.0022).