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Pedigree of MED with mild myopathy genotyped at markers from chromosome 20q13.3. The disease haplotype is boxed. All affected family members share a common allele of markers D20S173, D20S93, and D20S164. D20S93* lies within an intron of the COL9A3 gene (34). Circles, female; squares, male; shaded symbols, affected; open symbols, unaffected.
