Hydroxyurea
Sodium metabisulfite is added to the tissue sample to diagnose this disease, which is caused by a   single substitution of valine for glutamic acid. Hydroxyurea [hi-DROK-see- yoo-ree-uh] can treat this  disease by inducing production of the fetal form of hemoglobin, which if left untreated can cause the   spleen to simultaneously enlarge and deteriorate. Heterozygote advantage may explain the prevalence  of this disease in malaria-stricken regions like sub-Saharan Africa. Often triggered by low oxygen  concentration, name this hereditary disease in which small blood vessels may be blocked by the  characteristic crescent-shaped red blood cells.
Sodium metabisulfite is added to the tissue sample to diagnose this disease, which is caused by a   single substitution of valine for glutamic acid.
sickle-cell anemia [or sickle-cell disease]