Figure 4From: Application of the dual-luciferase reporter assay to the analysis of promoter activity in Zebrafish embryosMolecules microinjected in the yolk sac are rapidly delivered into the embryo. (A) Schematic representation of the site of injection in one-cell zebrafish embryo. (B) Visualization of FITC labelled EcLPS upon microinjection into the yolk sac. Embryos were microinjected with 3.5 ng LPS from E. coli strains 0111:B4 conjugated with FITC and examined at the indicated times with a LUMAR stereomicroscope. hpi, hours post-injection.Back to article page