Marquita Williams is a year - old medical student with stem cell disease . The critical care doctors and the hematologist worked day and night to figure out what was happening to me . Broad cell disease is a genetic blood disorder that can cause severe pain . Gaines receives a red blood cell exchange transfusion every two weeks . Each exchange transfusion contains 10 units of red blood cells .
Marquita Williams is a year - old medical student with stem cell disease . Broad cell disease is a genetic blood disorder that can cause severe pain . Gaines receives a red blood cell exchange transfusion every two weeks . Each exchange transfusion contains 10 units of red blood cells .