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Fig. 2. AML1-ETO transgenic zebrafish possess functional cardiovascular
systems. (A) flk1 in situ hybridization of heat-treated
wild-type and Tg(hsp:AML1-ETO) embryos harvested at designated stages
as indicated. (B) Bright-light and fluorescent images of
fli1-EGFP transgenic embryos in wild-type or
Tg(hsp:AML1-ETO) background. These embryos have been subjected to the
same heat treatment. The arrowhead indicates the site of the accumulated blood
cells. (C) Fluorescent microangiography shows that the vasculature is
continuous and the site of the accumulated blood cells is connected to the
rest of the circulatory system.