title: Linkage analysis of X-linked mental retardation with and without fragile-X using factor IX gene probe.
mesh_terms: D004262:DNA Restriction Enzymes; D005164:Factor IX / Q000235:genetics; D005260:Female; D005600:Fragile X Syndrome / Q000150:complications / Q000235:genetics*; D008040:Genetic Linkage; D005819:Genetic Markers; D006801:Humans; D008607:Intellectual Disability / Q000150:complications / Q000235:genetics*; D008297:Male; D012729:Sex Chromosome Aberrations / Q000235:genetics*; D014960:X Chromosome
chemical_list: D005819:Genetic Markers; D005164:Factor IX; D004262:DNA Restriction Enzymes