Bone marrow: The soft blood-forming tissue that fills the cavities of bones and contains fat and immature and mature blood cells, including white blood cells, red blood cells, and platelets. Diseases or drugs that affect the bone marrow can affect the total counts of these cells.one marrow: The soft blood-forming tissue that fills the cavities of bones and contains fat and immature and mature blood cells, including white blood cells, red blood cells, and platelets. Diseases or drugs that affect the bone marrow can affect the total counts of these cells.
hooks (left) and loops (right). Velcro is a brandname and trademark owned by the Velcro Companies for hook-and-loop fasteners. Hook-and-loop fasteners have a hook side, which is a piece of fabric covered with tiny hooks, and a loop side, which is covered with even smaller and hairier loops.
US Saws â The Digital Cut. VEX400 â Battery Operated Valve Exerciser. U.S. Saws recognized a clear need for a portable, battery operated valve turning system that was powerful, easy to set up, and versatile. U.S. Saws has created the VEX400 to streamline a valve exercising program. The tool is easier to use and as powerful as some truck mounted systems.