Red vs. White Blood Cell Counts: Why There Are More RBCs
Yes, red blood cells (erythrocytes) vastly outnumber white blood cells (leukocytes).
- RBCs: ~4.5–5.9 million/µL
- WBCs: ~4,500–11,000/µL
Ratio: ~400–1,300 RBCs per WBC. This reflects RBCs' primary role in oxygen transport vs. WBCs' immune surveillance.
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