Fig. 3 GFP expression from modified GATA-2 BACs in living zebrafish embryos. (A) GFP expression driven by modified BAC clone 4 in the ventral ectoderm and mesoderm of a 6-h shield stage embryo. Arrow indicates the dorsal shield. (B) GFP expression driven by modified BAC clone 4 in the posterior intermediate cell mass of a 20-h embryo. (C) GATA-2 expression pattern in an 18-h embryo as detected by RNA in situ hybridization. (D) GFP expression driven by modified BAC clone 3 in circulating hematopoietic cells of a 48-h embryo. GFP expression driven by modified BAC clone 4 in the EVL (E and G) and in a motoneuron (F) of 48-h embryos.
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