title: Developmental clocks and hemoglobin switching.
mesh_terms: D002455:Cell Division; D005314:Embryonic and Fetal Development; D005319:Fetal Hemoglobin / Q000096:biosynthesis* / Q000235:genetics; D005333:Fetus; D006441:Hemoglobin A / Q000096:biosynthesis* / Q000235:genetics; D006801:Humans
chemical_list: D006441:Hemoglobin A; D005319:Fetal Hemoglobin