Slipper animalcules (Paramecium spec.), Makroaufnahme, interphaco, Deutschland Stockfotografie - Alamy
Slipper Animalcule Paramecium Model, Three Dimensional, Sectional View with Hand Painted Details and Removable Parts - Mounted on Base, 18" x 8" - Eisco Labs : Amazon.co.uk: Toys & Games