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. 2022 Aug 20;14:172. doi: 10.1007/s40820-022-00922-5

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Fig. 3 — Examples of standards related to the in vitro biological tests and toxicity evaluations/monitoring of nanomaterials. a ISO (TC) 229 committee standards provide general guidelines and recommendations for nanoparticle characterization in biological environments, and for evaluation of nanoparticle biocompatibility in living systems. Standard labeled by “*” are currently under development. b Schematic showing the states at which measurements are made (Technical Specification ISO/TS 19337:2016(E))