Figure 4.

Gelation time (A) and swelling ratios (B) of self-crosslinked oxidized alginate (OAlg)-carboxymethyl chitosan (CMC) hydrogels with different weight ratios showed that the higher weight ratios of oxidized alginate to carboxymethyl chitosan decreased both the gelation time and the swelling ratio of the hydrogels. Data are shown as mean and error bars represent the standard deviation of three independent experimental replicates (* statistical significance is indicated as *** p < 0.001, ** p < 0.01, * p < 0.05).