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. 2020 Oct 8;15:7651–7666. doi: 10.2147/IJN.S252640

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© 2020 Nirmala et al.

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Visual inspection of all celery oil-based formulations with varying oil-to surfactant ratios before and after sonication time of 5, 10, 15 and 20 min, showing colour change from milky to transparent.