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. 2022 Apr 25;7:8. doi: 10.1186/s41181-022-00161-4

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Fig. 2 — Examples of nanomaterials available or under research worldwide, representing the main forms/structures, including polymeric nanoparticles, metal nanoparticles (gold and silver mainly), liposomes, mesoporous silica, and graphene (and graphene derivatives, like graphene quantum dots and graphene oxide)