Short tandem repeat ( STR) is one of the genetic polymorphic markers within the NRY region in Chromosome Y, which is also called microsatellite.
短串联重复（STR）是Y染色体NRY区的多态性遗传标记的一种，又称微卫星。
Y and valid for a maximum of one year unless repeat tests are carried out.
者的公司，除非进行复试，否则有效期最长为一年。
Y and valid for a maximum of one year unless repeat tests are carried out.
者的公司，除非进行复试，否则有效期最长为一年。
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