A bone marrow transplant is used to replace defective and ineffective bone marrow with healthy and effective marrow.
Red blood cells are manufactured in the bone marrow. The bone marrow of a sickle cell patient produces red blood cells that are sickle shaped and ineffective. Chemotherapy is used to kill all of the defective bone marrow and a bone marrow transplant is used to replace it.
Aswer: Hydroxyurea makes your blood cells bigger and it helps them stay rounder and more flexible and makes them less likely to turn into a sickle shape.
football or basketball players.
answer; i believe that the answer is home chores,companionship and personal assistance;