Never a day goes by that someone, somewhere has need of it.
Some blood types are common, some rare, and others very rare.
Those who have a rare blood type will go to any expense or length to locate someone with the same type, for they know that their very life depends on it. The American Red Cross continually requests donations of blood, especially around holiday weekends. Blood is that liquid substance in the veins without which mankind could not survive. The very life of our flesh is in the blood. Without blood, man will die.