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Polymer–nanoparticle (PNP) hydrogels for cell encapsulation and delivery. Aqueous solutions of RGD‐functionalized PEG–PLA NPs, HPMC‐C12, and hMSCs are mixed to form PNP hydrogels. These hMSC‐loaded hydrogels are easily injected through high‐gauge needles and can be used to enhance cell viability during injection and local retention at the injection site in immunocompetent mice
