Invitrogen Corp. has announced the availability of advanced vectors for Vivid Colors Fluorescent Proteins, which are Enhanced Green Fluorescent Proteins (EGFP) for use in fluorescence microscopy or flow cytometry. Vivid Colors are derived from the Aequorea victoris jellyfish, are not prone to aggregation, are enhanced for extreme fluorescence and are humanized for optimal mammalian expression. The vectors and associated products offer benefits that include extended reporter protein fluorescence (up to 24 hours) and multiple colors for co-visualization applications.