thumb|Promegakaryocyte
A promegakaryocyte is a precursor cell for a megakaryocyte, the development of which proceeds as follows: CFU-Meg (hematopoietic stem cell/hemocytoblast) → megakaryoblast → promegakaryocyte → megakaryocyte
Discovered by embedding cosine similarity (sentence-transformers MiniLM, 384-dim).