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The short tandem repeat (STR) polymorphism HumLPL (TTTA)n, which is located in intron 6 of the lipoprotein lipase gene, was investigated by AMPFLP (amplification fragment length polymorphism)-technique using an allelic ladder consisting of amplified alleles of this locus as a standard size marker. The allelic ladder was prepared by pooling equal concentrations of six separate alleles, which were identified by their different electrophoretic mobility in native polyacrylamide gel, eluted and subsequently amplified. Sequence analysis of the ladder alleles and allele 7, which is not included in the ladder, showed a regular repeat structure with 7 and 9 to 14 repetitions of the core repeat. The allelic ladder was employed in the analysis of the genotypes of 550 unrelated Caucasoids of Austria. No new alleles were found. The population investigated showed no deviation from Hardy-Weinberg equilibrium (P = 0.195).

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We investigated the (AAAG)n short tandem repeat (STR) polymorphism HumF13A01 an Austrian Caucasoid population sample (n = 674). PCR amplified fragments were detected on an automatic A.L.F. DNA sequencer using laser-induced fluorescence. A total of 14 alleles could be identified including a new 179 bp allele which was designated allele 3. Sequence determination of allele 3 confirmed the typing results by revealing three continuous copies of the core repeat, whereas in sequencing of 54 additional alleles no further variants or microheterogeneities could be observed. The population data showed no significant deviation from Hardy-Weinberg equilibrium.