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Test of de novo or gamete-delivered transcripts in zygote. Relative expression levels of WOXs in sperm cells (SC), egg cells (EC), zygote (ZC), and 2-celled proembryos (TC). The expression level of each WOX in zygote was set as 1. The expression level was normalized to the average expression level of GAPDH (AJ133422), polyubiquitin (GQ281244), and elongation factor 1α (AF120093). Error bars represent ± standard error from three independent experiments.
