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Blood is very sensitive and needs a perfect storage environment. If blood is exposed to room temperature for one hour, it will be useless. Therefore, it is important to maintain the right temperature. The ice pack helps to do this when blood needs to be stored in unfavorable conditions. A change in color indicates for how long the blood has been exposed to exterior temperature. This is important as harmful bacteria can be generated that weaken or attack the immune system.
Seoul, South Korea