the relative amounts of the two pre-f1 zones and f1 are higher in the red cells of adults with 97 -- 100 % hb f ( homozygous hereditary persistence of fetal hemoglobin , homozygous deltabeta-thalassemia and homozygous beta0-thalassemia ) than in the red cells of an adult with homozygous beta+-thalassemia with 66 % hb f , a child with a trisomy-d-13 having 38 % hb f , and in two newborn .
C0008059
child
C0021289
newborn