Figure 2.

Comparison of the decontamination efficacy of varying irradiances of 405 nm light for decontamination of ex vivo stored human platelet concentrates, as a function of time. Platelet transfusion bags were seeded with low density contamination (10² CFUml⁻¹ Staphylococcus aureus) under constant agitation (72 rpm; 22–25°C). Data represents mean ± SEM (n = >3), with % survival compared to untreated (0 Jcm⁻²) platelet samples. (^*) represent significantly different % decontamination compared to other irradiances at the same exposure time [P = <0.05, one-way ANOVA with Fishers post-hoc test (Minitab v18)]: ^*a, significantly different to all other irradiances; ^*b, significantly different to 5 & 10 mWcm⁻²; ^*c, significantly different to 3 & 5 mWcm⁻².