In the developed nations, there are rare cases of deficiency of vitamin B2 since most of the food products with refined carbohydrates contain a good amount of riboflavin. Also, eggs and meat which are also commonly consumed are a good source of vitamin B2.
Blood plasma and serum â Blood plasma, or plasma, is prepared by obtaining a sample of blood and removing the blood cells. The red blood cells and white blood cells are removed by spinning with a centrifuge.
Coagulation - procoagulants. The third step, coagulation or blood clotting, reinforces the platelet plug with fibrin threads that act as a molecular glue for the aggregated platelets. The resulting blood clot (fibrin mesh) is quite effective in sealing larger breaks in a blood vessel. Blood is transformed from a liquid to a gel in a multistep process that involves a series of substances called clotting factors, or procoagulants.