competent BL21 cells

Shalom David Goldberg (sdg11@columbia.edu)
Thu, 5 Aug 1999 18:56:15 -0400 (EDT)

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Does anyone know where I can buy electrocompetent BL21(DE3) cells? I need
very high transformation efficiencies - at least 10 to the 9th colonies
per microgram, but higher would be better.

Thanks,
Shalom Goldberg

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