The PLT-BDNF levels, reported in the figure as ng/mL but applying a proportional correction for average total protein amounts in PRP, were 45.16 ± 26.32 ng/mL in the PTSD group and 20.53 ± 11.32 ng/mL and 38.17 ± 6.69 ng/mL in the depressed and control subjects, respectively. This evidence concerns the gene BDNF and post-traumatic stress disorder.