Invitrogen™ One Shot™ BL21(DE3)pLysS Chemically Competent E. coli  

One Shot BL21(DE3)pLysS Chemically Competent E. coli cells are ideal for use with bacteriophage T7 promoter-based expression systems such as pRSET and pET.

Invitrogen™ One Shot™ BL21 Star™ (DE3) Chemically Competent E. coli  

One Shot BL21 Star (DE3) Chemically Competent E. coli are designed for applications that require high-level expression of non-toxic recombinant proteins from low copy number, T7-promoter-based expression systems such as Champion pET vectors.

Invitrogen™ One Shot™ TOP10 Chemically Competent E. coli  

One Shot TOP10 Chemically Competent E. coli are ideal for high-efficiency cloning and plasmid DNA propagation and are provided at a transformation efficiency of 1 x 10⁹ cfu/μg plasmid DNA.

Invitrogen™ BL21 Star™ (DE3)pLysS One Shot™ Chemically Competent E. coli  

One Shot BL21 Star (DE3)pLysS Chemically Competent E. coli are cells designed for applications that require high-level expression of non-toxic recombinant proteins from low or high copy number vectors, such as pRSET and pET.

Invitrogen™ One Shot™ BL21(DE3) Chemically Competent E. coli  

One Shot BL21(DE3) Chemically Competent E. coli cells are ideal for use with bacteriophage T7 promoter-based expression systems such as pRSET and pET.

Invitrogen™ MultiShot™ StripWell TOP10 Chemically Competent E. coli  

MultiShot StripWell TOP10 Chemically Competent E. coli cells are ideal for high-efficiency cloning and plasmid propagation, achieving a transformation efficiency of >1 x 10⁸ cfu/μg with control plasmid DNA in StripWell format.

Thermo Scientific™ DH5α Competent Cells

Chemically competent E. coli cells recommended for routine subcloning into plasmid vectors. Subcloning efficiency cells are not suitable for the generation of cDNA libraries.

Invitrogen™ Competent Cell Sampler  

The Competent Cell Sampler Kit contains a pair of four different strains of chemically competent E. coli cells in One Shot format.

Thermo Scientific™ DH10B Competent Cells; High Efficiency

High efficiency, chemically competent E. coli cells. The DH10B strain is suitable for cloning DNA containing methylcytosine, 5-hydroxymethylcytosine, and methyladenine, allowing both prokaryotic and eukaryotic genomic DNA to be cloned efficiently.

New England Biolab Ltd dam-/dcm- Competent E. coli 6 x 0.2 ml/tube  

Methyltransferase deficient chemically competent E. coli cells suitable for growth of plasmids free of Dam and Dcm methylation. Note that dam- strains are not recommended as a host for primary cloning/ligation. The dam mutation can result in an increased mutation rate in the cell and a reduction in the transformation efficiency. DNA should be maintained in a dam+ strain unless there is a specific need for DNA free of Dam or Dcm methylation.

MilliporeSigma™ Novagen™ Rosetta™ (DE3) Competent Cells

Rosetta host strains are BL21 derivatives designed to enhance the expression of eukaryotic proteins that contain codons rarely used in E. coli.

Genlantis™ SoluBL21 Competent E. coli  

Invitrogen™ TOPO™ XL-2 Complete PCR Cloning Kit, with One Shot™ OmniMAX™ 2 T1^R Chemically Competent E. coli Cells  

Provides all the necessary elements for efficient cloning of extra-long PCR products (up to 13 kb)

Invitrogen™ One Shot™ MAX Efficiency™ DH5α-T1^R Competent Cells  

One Shot MAX Efficiency DH5α-T1^R Competent Cells are derived from the popular DH5α strain and carry the tonA (fhuA) mutation that confers resistance to T1 and T5 phage.

Invitrogen™ One Shot™ TOP10F' Chemically Competent E. coli  

One Shot TOP10F' Chemically Competent E. coli are identical to TOP10 cells, with the addition of an F' episome.