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.
The story of how blood clots, is the story of rapid-fire reactions. The first step in the chain is some kind of injury to a blood vessel, that makes a rough spot in its lining. Normally the lining of a blood vessel is smooth.Almost immediately, damaged tissue cells in the injured blood vessel wall release certain clotting factors into the plasma. The factors rapidly react with other factors already present into the plasma to form prothrombin activator.ormally the lining of a blood vessel is smooth. Almost immediately, damaged tissue cells in the injured blood vessel wall release certain clotting factors into the plasma. The factors rapidly react with other factors already present into the plasma to form prothrombin activator.