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Fig. 6. Phylogenetic analysis of zinc-finger proteins that belong to the Sp class.
A Tree-Puzzle analysis based on a Clustal W alignment places the
T-Sp8 gene (boxed) together with its ortholog from Drosophila
melanogaster (D-Sp1) close to the Sp7/osterix
and the Sp8 (Bouwman and
Philipsen, 2002) genes from vertebrates (Clustal W alignment;
btd-Dm: buttonhead/Drosophila melanogaster was used
as outgroup).