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Transmittance % of silk films. The T% of aq, FA, and HFIP films with and without annealing at the visible range on day 1 (a, dark bars represent the dry state and light bars represent the wet state) and day 28 (b, dark bars show week 1 data and light bars show week 4 data) indicated that there were no significant changes on the optical clarity of SF films even after wetting in STF for 4 weeks.
