Additional cell surface markers included CD10 (zinc-binding metalloendopeptidase and diagnostic pediatric lymphoma and leukemia cell surface marker)36, 39, 40, and CD13 (zinc-binding metalloprotease aminopeptidase, pericyte cell surface marker, and myeloid [normal and neoplastic] cell surface marker)36, 38. The gene discussed is ANPEP; the disease is leukemia.