erythrocyte
US /erˈɪθ.roʊ.saɪt/
UK /erˈɪθ.roʊ.saɪt/
1.
a red blood cell, which is a biconcave disc that contains hemoglobin and transports oxygen and carbon dioxide to and from the tissues.
:
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The doctor ordered a blood test to check the patient's erythrocyte count.
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Hemoglobin is the protein responsible for oxygen transport within the erythrocyte.