The term 'Emergency Supply' can be broken down into two crossword solutions: PLASMA (6 letters) and SERUM (5 letters). PLASMA is the liquid component of blood that carries red and white blood cells, platelets, and other substances throughout the body. It is used in medical treatments such as transfusions and intravenous injections. SERUM is a clear liquid that is separated from clotted blood and is used to diagnose diseases, detect antibodies, and treat certain conditions. Both PLASMA and SERUM are important components of emergency supplies, as they are essential for medical treatments in emergency situations.