Figure 1. Loading and release of chromium in CPMV.
A) After CPMV incubation with 50 mM CrCl3, dialysis was performed against 10 mM HEPES with 10 mM EDTA. Quantification of chromium in CPMV-Cr over time was measured by ICP-OES. Error bars show standard deviation of three measurements (it should be noted that all data points were measured in triplicates and error bars are shown for each time point, significant experimental variation was only observed for data collected on day 5). B) Transmission electron microscopy of CPMV loaded with CrCl3 indicated that the particle structure remains unchanged after modification.