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(a,b). Gel-electrophoresis of loaded proteins: insulin (Ins, 1); lysozyme (Lys, 3); Af2 (5); bovine serum albumin (BSA, 7); mixture of all four proteins (9); and eluted (2, 4, 6, 8, 10 accordingly) from HCNGs (a) or SCNGs (b). Molecular weight marker (MM) includes 95, 66, 45, 31, 22 and 14 kDa. (c). Gel-electrophoresis of BSA loaded on NGs (1), eluted from HCNGs (2); from SCNGs (3) or recovered by centrifugation (CF) without NGs (4).
