Even if the blood is important however have an expiration date so that when the body is losing large amounts of blood at the same time, they must find new blood to replace it because it makes the body's system is still continuing.
Although blood is important, though, with an expiration date. So when the body has plenty of bad blood at one time because they need new blood to replace the system of the body still continue to work.
Although blood is important, it has an expiration date. So when the body is the loss of blood volume, at one time had to find a new blood replaced ครับเพราะ makes body system can still work.