english: Because if you can get the gene for green fluorescent protein and deliver it to a cell, that cell will glow green -- or any of the many variants now of green fluorescent protein, you get a cell to glow many different colors.
non_english: Ako možete iz zelenog fluorescentnog proteina da dobijete gen i sprovedete ga u ćeliju, ta ćelija će svetleti zeleno - ili u nekoj od mnogih varijanata zelenog fluorescentnog proteina, ćelija može da svetli u raznim bojama.