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Fig. 10
Expression patterns for known chamber growth regulators are altered in the tbx2ab double morphant. A–F: Shown are representative embryos examined by in situ hybridization for expression of transcripts for myl7 to indicate cardiomyocytes, and for the growth factors nppa, or ndrg4 as indicated, in wild-type (A–C) and tbx2ab morphant (D–F) embryos at 2 days postfertilization (dpf). Arrows indicate the atrial expression domain and arrowheads mark ventricular expression domain. Note that transcript levels for ndrg4 are reduced in the presumptive ventricle. For each panel, n is at least 20.
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