Ring sideroblasts in refractory anemia with ring sideroblasts (RARS)
Ring sideroblasts in refractory anemia with ring sideroblasts (RARS)
Prussian blue stain of the bone marrow in a patient with refractory anemia and ring sideroblasts (RARS). Blue-stained ferritin iron deposits in the mitochondria of erythroid precursors form an apparent ring around the nucleus (arrows).