#tetrahymena  relative of the paramecium; often used in genetics research
  supertype:  #ciliate__ciliated_protozoan__ciliophoran  a protozoan with a microscopic appendage extending from the surface of the cell
  member of:  #genus_Tetrahymena  protozoa having four membranous ciliary organelles
     member of:  #class_Ciliata__Ciliata__Ciliophora__class_Ciliophora  class of protozoa having cilia or hairlike appendages on part or all of the surface during some part of the life cycle
        member of:  #phylum_Protozoa__Protozoa  in some classifications considered a superphylum or a subkingdom; comprises flagellates; ciliates; sporozoans; amoebas; foraminifers
           member of:  #kingdom_Protoctista__Protoctista  in most modern classifications, replacement for the Protista; includes: Protozoa; Euglenophyta; Chlorophyta; Cryptophyta; Heterokontophyta; Rhodophyta; unicellular protists and their descendant multicellular organisms: regarded as distinct from plants and animals

No statement uses or specializes #tetrahymena; click here to add one.