title: Lyonization in hemophilia: a cause of error in direct detection of heterozygous carriers.
mesh_terms: D004200:Diseases in Twins; D005164:Factor IX / Q000032:analysis; D005169:Factor VIII / Q000032:analysis; D006467:Hemophilia A / Q000175:diagnosis / Q000235:genetics*; D006579:Heterozygote; D011336:Probability; D012728:Sex Chromatin
chemical_list: D005169:Factor VIII; D005164:Factor IX