Figure 7 in Three marine haptorid ciliates from northern China: Paraspathidium apofuscum n. sp., Trachelotractus entzi (Kahl, 1927) Foissner, 1997 and Apotrachelotractus variabialis Long, Song and Warren, 2009 (Protozoa, Ciliophora)

Figure 7. Photomicrographs of Apotrachelotractus variabialis Long, Song and Warren, 2009 from live cells (A, E, F, J) and after protargol impregnation (B–D, G–I, K, L). (A) lateral view of a not fully-extended cell, arrowhead indicates the contractile vacuole; (B) to show the circumoral kinety (arrow); (C) arrowheads show the extrusomes in the cell trunk; (D) the contractile vacuole (arrow); (E) posterior end of a cell, arrow marks the contractile vacuole pore; (F) lateral view of a contracted cell; (G) to show the neck suture (arrowheads); (H) anterior end, arrow marks the brush kinety, arrowheads indicate dikinetid kineties; (I) to show the dikinetids in the anterior end of a cell; (J) a highly contracted cell, arrow marks the dark area in the anterior part; (K) pharyngeal basket (arrowhead) and extrusomes beside the cytostome (arrows); (L) the macronuclear nodules (arrowheads). Note: scale bars: 300 µm (A); 200 µm (F, J).