Confidence votes 11. According to Wikipedia, the width of the Atlantic Ocean at its narrowest point is 2,848 kilometers (1,770 mi) between Brazil and Sierra Leone.
Paroxysmal nocturnal hemoglobinuria (PNH) may cause unpredictable episodes of acute red blood cell destruction (hemolysis). This occurs when a part of your immune system called complement attacks red blood cells that lack certain protective proteins.
Because PNH is. thought to come from an injury to a blood stem cell (a cell in. your bone marrow which produces other cells), PNH can devel-. op in all three types of blood cells â red blood cells which carry. oxygen to your body, white blood cells which help fight infec-.