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Click on the links below to access reviews of the scientific literature on this topic that have been published since the 2009 NIPCC report.

Effects of Elevated CO2 on Defensive Compounds in Bt-Transgenic and Non-Transgenic Cotton (22 March 2011)
Effects of Elevated CO2 on Foliar Phenolics and Condensed Tannins of Three Tree Species (24 November 2010)
Effects of Elevated CO2 and Temperature on Condensed Tannin Concentrations in Silver Birch Tree Leaves (28 Jul 2010)