| cirrus | A structure formed from a cluster or tuft of fused cilia, constituting one of the sensory or locomotor organs of certain ciliate protozoa. Origin: L. A curl (05 Mar 2000) |
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| TAB vaccine | A suspension of killed typhoid and paratyphoid A and B bacilli. See: typhoid vaccine. Synonym: TAB vaccine. (05 Mar 2000) |