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red blood cells

Cultural  
  1. The disk-shaped cells in the blood that contain hemoglobin. The red blood cells supply oxygen to all body cells and remove the carbon dioxide wastes that result from metabolism.


Example Sentences

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Vitamin B12 is best known for helping the body make DNA, red blood cells, and healthy nerve tissue.

From Science Daily • May 22, 2026

The common thread is that malignant cells overtake the marrow—the tissue that produces white blood cells to fight infection, red blood cells to carry oxygen, and platelets to prevent bleeding.

From The Wall Street Journal • Apr. 19, 2026

The day of Scott’s stem cell treatment, a nurse first extracted 80 cc of his blood, which was spun down to produce platelet-rich plasma; after that, red blood cells were removed, leaving concentrated plasma proteins.

From Slate • Mar. 30, 2026

People living with sickle cell disease have red blood cells that are crescent shaped due to a gene mutation.

From Los Angeles Times • Feb. 23, 2026

Walter Noel’s red blood cells and liver cells contained the same genetic information—but gene regulation ensured that the hemoglobin protein was only present in red blood cells, and not in the liver.

From "The Gene" by Siddhartha Mukherjee

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