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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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Researchers found that these cells, called macrophages, accumulate iron while breaking down old red blood cells.

From Science Daily • May 31, 2026

Mast cells appear to have evolved from macrophages, while early versions of T cells and red blood cells later emerged from mast cells.

From Science Daily • May 27, 2026

Once you donate blood, it is taken to a lab, where it is separated into three components: platelets, red blood cells, and plasma.

From Slate • May 9, 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

It bonds to your red blood cells like oxygen, but unlike oxygen, it doesn’t let your blood cells go.

From "Dry" by Neal Shusterman and Jarrod Shusterman

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