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BL21(DE3) Competent Cells

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BL21(DE3) Competent Cells. For non-toxic proteins, encodes T7 RNA polymerase under the control of the lacUV5 promoter. Use with Variflex or Affinity pCAL vectors.

For Research Use Only. Not for use in diagnostic procedures.
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Blue-White Screening Available
  • Yes
Cell Strain
  • BL21
Cell Type - Production Method
  • Chemically Competent
Competent Cell Suitable For
  • Use with non-toxic proteins
For Use With
  • Affinity pCAL
  • Variflex
  • B F– dcm ompT hsdS(rB– mB–) gal l(DE3)
  • Tetracycline
Transformation Efficiency - Quantitative
  • ˃ 1 transformants/µg x 10^