Analyzing gene expression in vivo is an unresolved technical task. Finding ways to see genes expressed without disturbing a complex organism is best done by inserting easily detectable marker genes into the genome, by replacing one copy of the endogenous gene and subsequently observing its expression under the microscope or through very sensitive CCD cameras.
Keywords: in vivo imaging; homologous recombination; marker genes; green fluorescence protein; GFP; luciferase




