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. 2016 Nov 30;2016:9273078. doi: 10.1155/2016/9273078

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Copyright © 2016 P. A. S. R. Santos et al.

This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

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Comparison of cytotoxic effect of R. officinalis (REO), C. longa (CEO), and Z. officinale (GEO) essential oils in cell lines HeLa (treatment) and HepG2 (control) on MTT and NR assays. (a, b) IC₅₀ result for REO on MTT and NR. (c, d) IC₅₀ results obtained for CEO on MTT and NR. (e, f) IC₅₀ results obtained for GEO on MTT and NR. Cell density was 1 × 10⁶ cells/mL (n = 3).