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Transmission electron micrographs (EM) of normal skin (n = 3) and keloid tissues (n = 3). (A) Representative EM images of normal skins. (B) Representative EM images of keloid tissues. ER, Endoplasmic Reticulum; M, Mitochondira; CF, collagen fiber; N, Nuclues. Scale bar: 0.5 μm.
