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Multiple sequence alignment of the HR-A/B regions (OD) of soybean Hsfs. The HR-A/B region sequences identified by SMART online tool were aligned by Clustal X 2.0 software and edited by DNAMAN software. The black and gray backgrounds indicate the 100% conservative residues and 50-75% conservative residues respectively. The three line segments at the top divide HR-A core, insert and HR-B regions orderly.
