title: A new DNA probe proximal to and closely linked to fragile X.
mesh_terms: D004274:DNA, Recombinant; D005600:Fragile X Syndrome / Q000235:genetics*; D005819:Genetic Markers; D006801:Humans; D008126:Lod Score; D011110:Polymorphism, Genetic; D012150:Polymorphism, Restriction Fragment Length; D012729:Sex Chromosome Aberrations / Q000235:genetics*; D014960:X Chromosome / Q000648:ultrastructure*
chemical_list: D004274:DNA, Recombinant; D005819:Genetic Markers