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Principal components analysis (PCA) of probe set signal intensity on the rice transcriptome, reflecting gene expression patterns in 31 different tissues of rice. Relative distances of sperm profiles from those of other cell and tissue types, including pollen, are indicative of highly divergent patterns of overall gene expression in the male germ lineage. Reproduced with permission of J.C. Wiley Press (Russell et al., 2008, 2012).
