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Position of the Metazoan mouth and anus relative to the expression of bra, gsc, cdx and otp. A Hejnol & MQ Martindale Nature 000 , 1-5 (2008) doi:10.1038/nature07 309.
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Position of the Metazoan mouth and anus relative to the expression of bra, gsc, cdx and otp. A Hejnol& MQ MartindaleNature000, 1-5 (2008) doi:10.1038/nature07309