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Chloroplast genome maps of three Juglans species. (A) J. cathayensis chloroplast genome, (B) J. mandshurica chloroplast genome, (C) J. sigillata chloroplast genome. Genes drawn outside the outer circle are transcribed clockwise, and those inside are transcribed counter-clockwise. Genes belonging to different functional groups are colorcoded. Thedark gray in the innercircle indicates GC content of the chloroplast genomes.
