UT researchers have found a way to make drug development faster, cheaper, and safer. The way involves making cells glow. Yes, glow. The researchers—Dan Close, Gary Sayler, Stacy Patterson, and Steven Ripp—use a series of genes to trigger the human or animal cells to continuously produce light—naturally. This is particularly important during drug trials. A healthy cell continues to glow, a dying cell flickers, and a dead cell is snuffed out. The researchers have a company called 490 Biotech and plans to bring their discovery to the marketplace.