Ciliophora (ciliates) Pellicle Cytostome Food vacuole ·Move by cilia Cilia 。Complex cells Balantidium coli is the only human parasite Contractile Macronucleus Anal pore vacuole Micronucleus (a)Paramecium Stalk Cytostome Cilia (b)Vorticella Figure 12.20 • Move by cilia • Complex cells • Balantidium coli is the only human parasite Ciliophora (ciliates) Figure 12.20