Erythroid Precursors 50 Percent or More of Bone Marrow Nucleated Cells

**Semantic type:** Laboratory or Test Result

**Definition:** A semi-quantitative microscopic finding indicating that at least 50 percent of the nucleated cells in a bone marrow sample are immature cells of the erythroid lineage.

**Synonyms:** - Erythroid Precursors 50% or More of Bone Marrow Nucleated Cells