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Example sentences for: pyub
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The PCR product was used as a probe for colony blots to find cosmids in the E. coli (pYUB178::H37Rv) library carrying at least a portion of the cosmid integrated in the sur2 clone.
In this study, the enrichment process resulted in the isolation of two strains containing small, integrated plasmids rather than the expected 30-50 kb cosmids [ 20 ] . Small plasmids corresponding to the integrated ones were present in the original E. coli (pYUB178:H37Rv) cosmid library.
In the λ phage library, ~225 cosmids represent one genome-equivalent of M. tuberculosis [ 20 ] . An E. coli (pYUB178::H37Rv) library was created by infecting E. coli XL1-Blue with the λ phage library.
The pYUB178 plasmid and the λ phage library of pYUB178::H37Rv cosmids were generously provided by Dr. William Jacobs, Albert Einstein University, New York, NY [ 20 ] . The cosmid library contains 30-50 kb fragments of M. tuberculosis genomic DNA generated by partial Sau 3A digestion cloned into Bcl I-digested pYUB178.
About 10 6bacteria of the M. smegmatis (pYUB178::H37Rv) library were inoculated into Middlebrook 7H9 media containing 10 μg kanamycin/mL and then were grown to midlog phase (OD 600 ~ 0.3).
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