GFP (Green Fluorescent Protein) and other fluorescentproteins are extremely useful tools for microscopy because GFP and similar proteins are derived from mammalian proteins, so they do not kill cells in culture recombinant DNA techniques which can be used to express a specific target protein.
Green fluorescent protein (GFP) is a kind of protein in the jellyfish Aequorea Victoria which exhibits green fluorescence when exposed to any light. Green fluorescent protein (GFP) and its homologs are most widely used as fluorescent markers of the gene expression and also for the determination of protein localization and motility in the living cells.
