Automatically acquired images of embryos treated with increasing concentration of GSI or fragments of Gleevec. Images of embryos at 2 dpf (A), 3 dpf (B), and 5 dpf (C) were presented. Untreated embryos and 0.1% DMSO-treated embryos displayed similar phenotypes. Embryos treated with 50 μM DAPT showed a strong phenotype, and much less effect was observed at lower concentrations (5 μM and 0.5 μM). Gleevec was assessed at 100 μM, 10 μM, 1 μM, and embryos showed no phenotypic alteration. Embryos treated with 100 μM of AD95 showed morphologic changes. These changes were not obvious when 50 μM AD95 was used.