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Antibacterial activity of CMS, CuO nanoparticles, the CMS@2%CuO nanocomposite hydrogel, and the CMS@4%CuO nanocomposite hydrogel against different Gram-positive and Gram-negative bacteria. (a) cell cultures (b) charts. For each chart, columns marked with asterisks (*) denote significant difference compared with pure CMS (p < 0.05).
