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. 2022 Dec 15;315(5):1249–1255. doi: 10.1007/s00403-022-02511-3

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Fig. 3 — 25 years old female patient had atrophic acne scar showed good improvement after treatment with PRP. Right side treated by combined PRP with needling (a, before treatment), (b, after treatment). Left side of face treated by intradermal injection of PRP only (c, before treatment) (d, after treatment)