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. 2011 Feb 17;11:13. doi: 10.1186/1472-6882-11-13

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Copyright ©2011 Gupta and Gupta; licensee BioMed Central Ltd.

This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/2.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

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Metal chelating activity. Effect of Dragon's blood resin extracts and standard Na₂EDTA on metal chelating assay. The percentage of chelation was plotted against concentration of sample. **P < 0.0001 vs 0 μg/ml.