Q: Which E. coli strain was tested during QC, and what method was used?
A: The antibody was tested by indirect ELISA against E. coli serotypes O157:H7, O20, O125, O55, O111, and K12. Other serotypes have not been tested. It is also reactive by indirect immunofluorescence assay (IFA) against seven E. coli serotypes, and is reactive with the E. coli molecular biology strain BL21 (DE3).