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 or PNH is a rare and chronic disease that results in an abnormal breakdown of red blood cells. PNH is due to a spontaneous genetic mutation that causes red blood cells to be deficient in a protein, leaving them fragile.
Hypochromia is characterized by an increase in central pallor. It is said to be present when greater than 1/2 of the cell diameter has central pallor. Hypochromia is caused by a deficiency in the production of hemoglobin, which is usually the result of iron deficiency caused by chronic hemorrhage. Poikilocytes are frequent in iron-lack anemia and are thought to result from oxidation of the erythrocyte membrane resulting in fragmentation.