Imaging live cells with fluorescent proteins has long been a crucial technique for understanding cellular behavior. While bioluminescent proteins offer several advantages over fluorescent proteins, the limited availability of color variants has made it difficult to observe multiple targets simultaneously. Imaging live cells with fluorescent proteins has long been a crucial technique for understanding cellular behavior. While bioluminescent proteins offer several advantages over fluorescent proteins, the limited availability of color variants has made it difficult to observe multiple targets simultaneously. Cell & Microbiology Biotechnology Phys.org – latest science and technology news stories