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. 2019 May 23;11(5):1159. doi: 10.3390/nu11051159

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© 2019 by the authors.

Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/).

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Effect of insect extracts on matrix metalloproteinase (MMP) and procollagen expression. (a) MMP-1 and (b) MMP-9 protein levels in UVB-irradiated skin. (c) Western blot analysis of effects of insect extracts on UVB-mediated induction of MMP-1 and MMP-9. #### p < 0.0001 vs. normal group, **** p < 0.0001 vs. vehicle group. These measurements were performed in triplicate. Nor, Normal; Veh, Vehicle; ADL, Allomyrina dichotoma larva; PBS, Protaetia brevitarsis seulensis; TML, Tenebrio molitor Linnaeus; GBD, Gryllus bimaculatus De Geer.