Decrease in red blood cells induced by overexpression of truncated c-met mRNA. Tadpoles are stained with o-dianisidine, which demonstrates cells containing hemoglobin (white arrowheads). (A-C) Lateral views. (D-F) Ventral views. (A,D) Stained cells are detected in the heart and vitelline veins of a control tadpole injected with LacZ mRNA, but are rare in tadpoles injected with truncated c-met mRNA (B,C,E-F).