title: Studies on the oral apparatus of Tetrahymena pyriformis Gl.
mesh_terms: D000818:Animals; D006652:Histological Techniques; D008566:Membranes; D008854:Microscopy, Electron; D008858:Microscopy, Phase-Contrast; D008859:Microscopy, Polarization; D009055:Mouth / Q000033:anatomy & histology*; D013768:Tetrahymena / Q000033:anatomy & histology*