Recently , a technique of clonal analysis has been devised that takes advantage of a highly polymorphic short tandem repeat within the X-linked human androgen receptor ( AR ) gene , resulting in a heterozygosity rate approaching 90% .
recently , a technique of clonal analysis has been devised that takes advantage of a highly polymorphic short tandem repeat within the x-linked human androgen receptor ( ar ) gene , resulting in a heterozygosity rate approaching 90% .
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