You know what it looks like… but what is it called?
TAKE THE QUIZ“red blood”
We have one entry that includes the term red blood.
red blood cell
noun: any of the hemoglobin-containing cells that carry oxygen to the tissues and in mammals are typically biconcave disks which lack a nucleus and cellular organelles and are formed from nucleated cells of the red bone marrow compare white blood cell
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Merriam-Webster unabridged