highly significantP < 0.0001
Group differences were modest at 25 μg/mL (GO vs MP, n.s.; GO@MP vs GO/MP, small but significant), but became highly significant from 50 μg mL −1 onward (two-way ANOVA with Tukey, ∗∗∗∗P < 0.0001 for GO@MP vs GO; frequently P < 0.001–0.0001 for GO@MP vs MP).