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What does the blood in human blood contain and ratio?

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The average adult has about 4.5 to 5.5 liters of blood circulating inside their body. Human blood is  consist of three  main components that is erythrocytes (red blood cells, RBCs), leukocytes (white blood cells , WBCs), and thrombocytes (platelets). By volume, RBCs  constitute about 45% of whole blood,, WBCs  about 0.7%. and the plasma about 54.3% respectively. 

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Ritika Jonwal

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