Postnatal changes in some red cell parameters.
D001772:Blood Cell Count; D004906:Erythrocyte Count; D004912:Erythrocytes; D004920:Erythropoiesis; D006400:Hematocrit; D006454:Hemoglobins; D006801:Humans; D007223:Infant; D007231:Infant, Newborn; D007234:Infant, Premature; D012156:Reticulocytes
D006454:Hemoglobins