In the field of cell biology, TNF-related apoptosis-inducing ligand (TRAIL),'s a protein which functions as a ligand which induces the process of cell death called apoptosis. TRAIL has also been designated CD253 (cluster of differentiation 253). Gene In humans, the gene that encodes for TRAIL's located at chromosome 3q26, which isn't close to other TNF family members. The genomic structure of the TRAIL gene spans approximately 20 kb and's composed of five exonic segments 222, 138, 42, 106, and… (More on Trail)