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Micrograph of subcutaneous skin tissues of rats implanted with Sham, poly (lactic-co-glycolic acid) (PLAGA) and single-walled carbon nanotubes (SWCNT)/PLAGA at two, four, eight and 12 weeks post-implantation stained with haematoxylin and eosin (×20 magnification). C, composite (PLAGA or SWCNT/PLAGA) implant site; M, muscular tissue; N, polymorphonuclear neutrophils; Fp, fibroplasia; Fb, fibrosis.
