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PMELNVs suppress β-gal and matrix metalloproteinase production, enhance HDF viability, and up-regulate collagen expression to counteract aging. (A) PMELNVs enhance the viability of UVB-damaged HDF cells. (B and C) β-Gal staining and its quantification data. (D) PCR examination of COL1, COL3, and MMP1 expression in HDF cells. (E and F) Analysis using the Western blot technique for COL1, COL3, and MMP1 expression in HDF cells and its quantification data.
