Viabilities of SH-SY5Y cells in the presence of 250 μM DA,
250 μM DA and 50 μM Fe(III), and a mixture of 250 μM
DA, 50 μM Fe(III), and 250 μM ATP after a 12 h incubation.
The p value for the cell viabilities of the DA/Fe(III)
mixture and the DA/Fe(III)/ATP mixture is 0.002, indicating that the
difference between the two mixtures is statistically significant.