Erythron may refer to:
* the sum of all
red blood cells
Red blood cells (RBCs), referred to as erythrocytes (, with -''cyte'' translated as 'cell' in modern usage) in academia and medical publishing, also known as red cells, erythroid cells, and rarely haematids, are the most common type of blood cel ...
in the body
* the ancient town of
Erythrum in modern-day Libya
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