| BCS | bovine fetal serum |
| Ch | chitosan |
| CHT | α-chymotrypsin |
| DAL | dalargin |
| DEAE-Cl HCl | 2 diethylaminoethyl chloride hydrochloride |
| DMSO | dimethyl sulfoxide |
| DPBS | Dulbecco’s phosphate buffer |
| HMDI | 1,6-hexamethylene diisocyanate |
| MCD | 2-methyl-β-cyclodextrin |
| MEM | minimum essential medium |
| N+-rCh | reduced molecular weight ammonium chitosan |
| N+-rCh-MCD | ammonium-chitosan grafted with 2-methyl-β-cyclodextrin |
| rCh | reduced molecular weight chitosan |
| TEA | triethylamine |