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. 2011 Sep 8;6(9):e24152. doi: 10.1371/journal.pone.0024152

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Pang et al.

This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are properly credited.

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The rows contain the different TGF-β components. The columns represent the four early-branching lineages of the Metazoa, plus the Bilateria. Each row represents the presence (black dot) or absence (grey dot) of a particular component in the corresponding lineage. The box shows the absences shared by Porifera and Ctenophora. Data is compiled from genomic data of Amphimedon queenslandica (Porifera), Mnemiopsis leidyi (Ctenophora), Trichoplax adhaerens (Placozoa), Nematostella vectensis and Hydra magnipapillata (Cnidaria), and Drosophila melanogaster and Homo sapiens (Bilateria).