Escherichia coli OP50

Escherichia coli K-12 MG1655 is the canonical laboratory reference strain of E.

Escherichia coli K12 is a non-pathogenic laboratory reference strain that has been central to molecular biology and genetics research since the mid-20th century.

Escherichia coli MG1655 is a well-characterized, non-pathogenic K-12 laboratory reference strain used extensively as a model organism in microbiology and biotechnology research.

Escherichia coli ATCC 8739 is a non-pathogenic, biosafety level 1 laboratory reference strain used extensively as a negative control or challenge organism in antimicrobial and microbiological assays.

Escherichia coli K-12 is a well-studied non-pathogenic laboratory strain of E.

Escherichia coli is a highly diverse bacterial species found naturally in the human gut, where most strains are commensal — meaning they coexist with their host without causing harm.