I know that some kinds of E.coli are harmful while others are harmless, but is E.coli OP50 harmful (pathogenic) to its host? Thanks!
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E. coli OP 50 is considered a non-pathogenic bacteria, but it should be remembered that many non-pathogenic bacteria can cause infections if it gains access to certain body sites. These bacteria are known as opportunistic pathogens. But again, OP50 is considered non-pathogenic.