title: Trichodina ranae Dacunha, 1950 (Ciliata: Urceolariidae); a parasite of Rana ridibunda in Saudi Arabia.
mesh_terms: D000818:Animals; D016798:Ciliophora / Q000166:cytology / Q000302:isolation & purification*; D011895:Rana ridibunda / Q000469:parasitology*; D011898:Ranidae / Q000469:parasitology*; D012529:Saudi Arabia