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All of the blood cells in the body are mixed together in a slightly yellowish liquid called Plasma. Plasma is mostly made up of water, but also contains proteins, sugars and salt. In addition to carrying blood cells throughout your body, plasma also carries hormones, nutrients and chemicals, such as iron.   Plasma has the important function of maintaining the pH of the blood at approximately 7.4.

It was interesting to see how all the blood components work together. I didn't know much about it.
— Steven,
high school student
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