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Cry1Ab/1Ac concentration detected in donor line Huahui 1, 208S and its hybrid Zheyou 3 at tillering, heading and filling stages. (A–D) Cry1Ab/1Ac concentration detected in the leaf, stem, root and endosperm, respectively. Error bars indicate ± SD (n = 3). The x-axis represents corresponding rice lines containing the Bt gene.
