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Heterogeneity analyses. (a) MS (m/z) analyses of etanercept (red) and rituximab (black), (b) glycan heterogeneity by HILI-UPLC of Infinitam (blue) and the reference product (red), and (c) charge heterogeneity by cIEF of Infinitam (blue), reference product (red), and rituximab (black).
