BL21-Gold (DE3)pLysS Competent Cells

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Three different strains that provide varying levels of expression control with T7 promoter-driven vectors, such as the pCAL and pET vectors.
  •  BL21 derivatives for tight expression control
  •  Express toxic proteins
  •  Use BL21, BL21-Gold or BL21-CodonPlus cells
  •  High-level protein expression
  •  Use for established expression constructs
  •  Economical alternative