Electron microscopic analysis of

Alas2-null definitive erythroblasts. The wild-type and Alas2-null definitive erythroblasts were examined by TEM. (A) The wild-type definitive erythroblasts. (B)Alas2-null definitive erythroblasts (ferritin aggregates indicated by an arrow). (C) Alas2-null definitive erythroblasts (no iron granules in mitochondria). The original magnification was × 50 000 for all panels.