Auer Rod

**Semantic type:** Cell Component

**Definition:** Rod-shaped structures of uncertain nature in the cytoplasm of immature myeloid cells, especially myeloblasts, in acute myelocytic leukemia; may be an abnormal form of lysosomes; they contain peroxidase and acid phosphatase, and stain red by azure-eosin stains.

**Synonyms:** - Auer Body