| CTR− | negative control condition |
| CTR+ | positive control condition |
| ELISA | enzyme-linked immunosorbent assay |
| HA-CL | cross-linked hyaluronic acid |
| HA | hyaluronic acid |
| HCE | 3D reconstructed tissues of human corneal epithelium |
| HCEpiC | 2D human corneal epithelial cells |
| HE | hematoxylin and eosin |
| IL-8 | interleukin-8 |
| KCS | keratoconjunctivitis sicca |
| MTT | 3(4,5-dimethylthiazol-2)2,5 difeniltetrazolium bromide |
| S1 | solution 1, 0.02% (w/v) HA-CL |
| S2 | solution 2, 0.4% (w/v) HA-CL |
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