1,455 意见 · 01/17/24
The blood (1 of 3)
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7,386 意见·
01/17/24
Blood cells travel through the circulatory system suspended in a yellowish fluid called plasma. Plasma is 90% water and contains nutrients, proteins, hormones, and waste products. Whole blood is a mixture of blood cells and plasma.
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1,455 意见 · 01/17/24
