Hematopoietic and Lymphoid Normal Histology Embryonal red blood cells Hematopoiesis in yolk sac Hematopoiesis in liver Hematopoiesis in bone marrow Hematopoiesis in other fetal tissue Blood Cell Anomalies Howell-Jolly bodies Schistocytes Helmet cells Blister cells Spherocytes Dacrocytes (Tear drop cells) Codocytes (Target cells) Nucleated red blood cells Polychromatophilia Stomatocyte Elliptocytes Sickle cell Alpha-thalassemia (Hemoglobin H Disease) Alpha-thalassemia (Hemoglobin Bart’s) Pelger-Huet Anomaly Transient abnormal myelopoesis: Down Syndrome Leukemia and Lymphoma Hairy cell leukemia Systemic diseases Langerhans cell histocytosis Splenic abscess Gaucher disease Sickle cell anemia Gamna Gandy Body Sarcoidosis Acquired immunodeficiency syndrome (AIDS) Castleman's Disease