The latest in the category: a pourable bandage called Celox. Made by SAM Medical Products near Portland, Oregon, Celox is a granular compound derived from shrimp shells. â€It resembles uncooked grits,â€ says Adrian Polliack, SAM´s head of research and development. When poured directly into a bleeding wound and subjected to pressure, the posi-
tively charged Celox granules cross-link with negatively charged red blood cells, forming a putty-like plug that blocks blood flow [see slideshow].