title: Absence of haemoglobin A in an individual simultaneously heterozygous in the genes for hereditary persistence of foetal haemoglobin and beta-thalassemia.
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D044383:Black People; D002845:Chromatography; D004906:Erythrocyte Count; D005260:Female; D005319:Fetal Hemoglobin; D005838:Genotype; D006400:Hematocrit; D006452:Hemoglobinometry; D006453:Hemoglobinopathies / Q000235:genetics*; D006454:Hemoglobins / Q000032:analysis; D006579:Heterozygote; D006801:Humans; D008297:Male; D008875:Middle Aged; D009996:Osmotic Fragility; D010375:Pedigree; D012156:Reticulocytes; D013789:Thalassemia / Q000235:genetics*
chemical_list: D006454:Hemoglobins; D005319:Fetal Hemoglobin