61.   Red blood cells carry oxygen around the body.

62.   Sickle-cell anemia is characterized by severe pain and abnormal red blood cells that are not carrying oxygen sufficiently to the various organs.

63.   The drug is similar to the eryhthropoitein or EPO a hormone that boosts production of red blood cells that carry oxygen to the muscles.

64.   The investigation into the Festina team uncovered a system to finance banned performance-enhancing substances, notably EPO, which allows the blood to carry more oxygen.

65.   The performance-enhancing drug is used to treat anemia by boosting the production of red blood cells that carry oxygen to muscles.

66.   They have an unusual form of hemoglobin, the stuff that carries oxygen in blood.