(A) The viability of 3T3 mouse fibroblasts and HEK293 cells, as assessed by the MTS assay, after 5-h treatment with different concentrations of Na-Alg and CMC-Na, (a) without or (b) with the subsequent 24-h post-treatment incubation. Data are presented as the means ± SD of triplicate experiments. (B) The impact of 5-h treatment with different concentrations of Na-Alg and CMC-Na, (a) without or (b) with the subsequent 24-h post-treatment incubation, on the proliferation of 3T3 mouse fibroblasts and HEK293 cells as assessed by cell counting. Data are presented as the means ± SD of triplicate experiments. (C) Hemolytic rates of erythrocytes with increasing concentrations of different complex fibers. (D) TG curves of Na-Alg, CMC-Na, and the C-A1C3 fiber.