Pulmonary arterial hypertension is a rare but severe disease with an estimated five-year survival rate of only 57% after diagnosis, according to the Registry to Evaluate Early And Long-term PAH disease management (REVEAL), which registers data from patients in the United States.
Concentration of elements in the ocean relative to the total concentration in the bulk silicate Earth (BSE). Of all the elements, only Cl and Br have a significant fraction in the ocean (see inset), indicating the extreme hydrophilic character for the heavier halogens.
Minerals: Chloride. The element chlorine itself is a poisonous gas that is soluble in water; in nature and in our body, it exists primarily as the chloride anion, the negatively charged ion that joins with cations such as sodium to make salt (sodium chloride) and with hydrogen to make stomach acid (hydrochloric acid).