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Crystal violet release kinetics from non-degradable hydrogels. Time (days) required to release ~30%, 60% and 100% loaded crystal violet was slower for more sulfated heparin hydrogels than more desulfated heparin and PEGDA-only hydrogels.
| Hep | Hep−N | Hep−N,−6O | Hep− | PEGDA-only | |
|---|---|---|---|---|---|
| ~30% | 5 | 5 | 1 | 1 | <1 |
| ~60% | 15 | 11 | 3 | 3 | 1 |
| ~100% | N/A | N/A | 7 | 5 | 3 |
