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Fig. 5. Activator and repressor Mesp fusion proteins alter the expression of B7.5 lineage markers. (A-C) Control, (D-F) Mesp-VP16. (A,D) Transgenic Mesp-lacZ embryos. (B,E) Embryos stained using a probe for Hand-like. (C,F) Embryos stained using a probe for Raldh2. All embryos are shown laterally, anterior to the left.