 denote a statistical significance of *p* ≤ 0.00, *p* ≤ 0.00, *p* ≤ 0.000, and *p* ≤ 0.0000, respectively, as tested by one-way ANOVA using Tukey's multiple comparisons test. U: unmodified glycoform.](fimmu-00-00000-g000){#F0}  