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A representative mouse embryo (E12.5) showing the limb enhancer expression pattern for each M. lucifugus BAR. Nearby limb-associated gene names are written in parenthesis with the number of embryos showing a limb expression pattern given below. M. lucifugus BARs were scored by the number of transgenic LacZ positive limb/ LacZ positive expressing embryos. All five M. lucifugus BARs have LacZ expression in the limbs.
