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Electron microscopic examination of cellular localization of ALA PLGA NPs.
Notes: NPs are indicated by arrowheads. Control group: (A) 7,400× and (D) 17,500×. ALA NP group: (B) 7,400× and (E) 17,500×. Microneedling combination group: (C) 7,400× and (F) 17,500×.
Abbreviations: ALA, 5-aminolevulinic acid; PLGA, polylactic-co-glycolic acid; NPs, nanoparticles.
