A metamyelocyte is a cell undergoing granulopoiesis, derived from a myelocyte, and leading to a band cell. It is characterized by the appearance of a bent nucleus, cytoplasmic granules, and the absence of visible nucleoli. (If the nucleus is not yet bent, then it is likely a myelocyte.) Additional images See also Pluripotential hemopoietic stem cell External links - "Bone Marrow and Hemopoiesis: bone marrow smear, neutrophilic metamyelocyte and mature PMN" Interactive diagram at lycos.es Slide at marist.edu hematologyatlas.com Histology Leukocytes