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ede533-sup-0001-figures1.tif9402K

Fig. S1. Alignment of the putative amphioxus sFRP2-like protein sequence and similar protein sequences in other organisms.

Fig. S2. Phylogenetic trees of sFRP proteins, constructed with the MEGA program version 5 using maximum-likelihood (A) and the neighbor-joining (B) methods with default settings.

Fig. S3. Spatial expression of the amphioxus sFRP2-like mRNA detected by in situ hybridization.

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