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Telomeres in the dipteran Chironomus pallidivittatus terminate with 340bp tandem DNA repeats belonging to different subfamilies with characteristic intertelomeric distribution. We have now found, interspersed between such repeats, a composite element of approx. 1400bp present in two similar size variants, with several components of nontelomeric origin. There were about 50 copies of the element, predominantly...
Pseudomonas aeruginosa CMG103 was isolated from a metal-polluted river in Pakistan and displayed a high level of Zn and Cd resistance. An Ω-Km transposon mutant of strain CMG103, which showed a substantial decrease in resistance to Zn and Cd, was obtained. A 12.8kb region determining Zn and Cd resistance in strain CM103 was cloned by complementing the mutant strain, and its nt sequence was determined...
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