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Score plot of Principal Component Analysis (PCA) of volatiles emitted by nine Arabidopsis thaliana accessions infested with Pieris rapae (A) or treated with JA (B). The PCA shows the first and second PC. Open circles, An1; filled circles, C24; open squares, Cvi; filled squares, Col0; open diamonds, Eri; filled diamonds, Kond; open triangles, Ler; filled triangles, Kyo-1; open arrowheads, WS.
