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. 2020 Jun 22;15:4441–4452. doi: 10.2147/IJN.S246797

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© 2020 Poier et al.

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Capillary tube formation assay. This assay indicated functional decrease in HUVEC after exposure to ZnO NPs. The pictures show tube formation after treatment with ECGM ((A); negative control) and 15 µg/mL ZnO NPs (B). Tube formation was analyzed automatically by ImageJ with the Angiogenesis Analyzer plugin.