| Hauch | <microbiology> A term used to designate the flagellar antigen of bacteria. See: H antigen. Origin: Ger. Breath (05 Mar 2000) |
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| ohne Hauch | Term used to designate the nonspreading growth of nonflagellated bacteria on agar media; also applied to somatic agglutination. See: O antigen. Origin: Ger. Without breath (05 Mar 2000) |
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