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  • Title: Simultaneous genetic typing from multiple short tandem repeat loci using a 96-capillary array electrophoresis system.
    Author: Gao Q, Pang HM, Yeung ES.
    Journal: Electrophoresis; 1999 Jun; 20(7):1518-26. PubMed ID: 10424475.
    Abstract:
    Short tandem repeat (STR) markers are highly polymorphic and widely used in human identification and genetic mapping. We demonstrate fast and reliable genotyping based on the four STR loci vWF, THO1, TPOX, CSF1PO by multiple-capillary array electrophoresis. Extracted human genomic DNA was amplified by polymerase chain reaction (PCR). The PCR products were mixed with pooled allelic ladder as an absolute standard and coinjected from a 96-vial tray. Separations were performed in polyvinylpyrrolidone (PVP) sieving matrix with a one-hour turnaround time, with no degradation over 27 runs. Simultaneous one-color laser-induced fluorescence detection was achieved by using a charge-coupled device (CCD) camera. The allele peaks for the unknown sample were identified by comparing the normalized peak intensities of the mixtures to those of the pooled ladder by using a straightforward algorithm. An extremely high level of confidence in matching the bands was indicated with negligible crosstalk (< 0.89%) between adjacent capillaries. This scheme is applicable for STR genotyping with high resolution, high speed and high throughput.
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