| SF | silk fibroin |
| MN | melatonin |
| Pro | proline |
| MT/SF@MNs | melatonin-loaded silk fibroin microneedles |
| OCT | optical coherence tomography |
| SD | Sprague dawley |
| IP | intraperitoneal injection group |
| Cmax | maximum blood concentration |
| AUC | area under the concentration–time curve |
| Tmax | peak time |
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