Red blood cell , also called erythrocyte. Red blood cells are the key of life.They are constantly traveling through your body , delivering oxygen and removing waste . If they didn't do their job , you would slowly die.
RBCs contain a protein called hemoglobin. Hemoglobin contain iron which makes it an excellent vehicle for transporting oxygen and carbon dioxide.
Red blood cells are the key of life.They are constantly traveling throughyour body , delivering oxygen and removing waste













