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The cx43 mRNA is overexpressed in alf dty86 fins. (A,B) Whole mount in situ hybridization shows that the distal expression domain of cx43 is expanded in alf dty86 fins. (C,D) The expansion of the mesenchymal cx43 expression domain is also apparent following cryosectioning of stained fins. (E) The length of the cx43 expression domain was measured from the V + 3 fin ray in each of ten fins, and is statistically different between alf dty86 and wild-type fins.
