Table provides a summary of the gelation time of hydrogels, where the weight percent of hydrogel precursors ranges from 1% to 4%. The gelation time varies from no gelation (infinity) to ultrafast (<1 second). To ensure successful cell encapsulation, the only viable formula is the combination of 3% chitosan-SH and 3% 4-arm-PEG-Mal, as longer (>5 minutes) or shorter (<5 seconds) gelation times could lead to failure. Longer gelation times may result in a lower weight percent of hydrogel precursors used, leading to the formation of an amorphous gel. On the other hand, shorter gelation times could result in incomplete "clicking" of the maleimide and thiol groups, negatively impacting cell growth. Thus, the 3% chitosan-SH and 3% 4-arm-PEG-Mal formula was utilized for all remaining experiments and analysis. Figure displays the rate of weight loss of the hydrogels. We measured the weight loss of hydrogels within 2 weeks. The hydrogels experienced a weight loss around 40% in the first week, after which they degraded steadily until the second week. Ultimately, the hydrogels degraded about 65%.