Sideroblast - histology slide

A photomicrograph of normal sideroblasts, using PAS stain with H&E counterstain. Sideroblasts are erythroblasts with fine, iron-containing granules in the cytoplasm. Normal sideroblasts show random iron deposits, typically 1-5, in the cytoplasm. Abnormal sideroblasts show an increase of granular iron deposits around the nucleus.

Histology image courtesy of CDC/Dr. Gordon D. McLaren.