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Fig. 4
Late phase enhancers from the nonteleost gar drive expression throughout the autopod in transgenic mice. Island I from gar drove expression in a posterior strip throughout the autopod and to the distal tip of the developing digits. Gar CsB drove strong expression in the autopod and in the presumptive digits. The hoxA late phase enhancer e16 from gar drove robust expression in the entire autopod, with a sharp boundary at the zeugopod. In accordance with previous reports, Island I from the teleost zebrafish had no activity in the autopod of transgenic mice.
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