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Cre recombinase has become an important instrument for achieving precise genetic manipulation in mice. Many of these desired genetic manipulations rely on Cre’s ability to direct spatially and temporally specified excision of a predesignated DNA sequence that has been flanked by directly repeated copies of the loxP recombination site. Success in achieving such conditional mutagenesis in mice depends...
The human chromosome 20p telomere has been cloned on a yeast artificial chromosome (YAC). The telomere-associated DNA contains an interstitial tract of (TTAGGG)ntelomeric repeats 60 kb in from the chromosome end. Frequent truncation of the YAC clone was observed due to resolution of the internal telomeric array into a telomere. The 20p internal telomeric repeat tract is flanked on its centromeric...
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