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Denaturing gradient gel electrophoresis (DGGE) patterns for exon 6 and exon 9 of the low density lipoprotein receptor gene from four of the family members. I:1, II:1, and II:2 show a band pattern indicating mutations in exon 6 and exon 9. The mother of the family (I:2) has normal DGGE patterns for the two exons.
