Escherichia albertii

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.

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.

Enterococcus faecalis is a gram-positive bacterium that is a normal inhabitant of the human gastrointestinal tract, but it is also a well-documented opportunistic pathogen associated with nosocomial (hospital-acquired) i…

Escherichia coli AY1 is a designated E. coli strain with no strain-specific published evidence available in the current literature index.

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

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.