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Chitosan hydrogel/3D-printed poly(-caprolactone) hybrid scaffold containing synovial mesenchymal stem cells for cartilage regeneration based on tetrahedral framework nucleic acid recruitment

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After a period of observation, using professional skin testing instruments to measure indicators such as elasticity and wrinkle depth of the neck skin, it was found that the elasticity of the neck skin increased while the depth of wrinkles decreased

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