XL1-Blue MR & MRF Competent Cells
XL-1 Blue MRF and XL-1 Blue MR competent cells allow high efficiency and representational cloning of methylated DNA. All known E. coli K12 restriction systems have been deleted. Use XL1-Blue MRF cells when cloning methylated cDNA or genomic DNA, or when cloning methylated PCR products.
When the F episome and blue-white screening are unnecessary, use XL1-Blue MR supercompetent cells. When cloning tetracycline-resistant plasmids, use XL1-Blue MRF Kan supercompetent cells to select for the F episome and provide a more intense blue color for blue-white screening.
For Research Use Only. Not for use in diagnostic procedures.