Paramecium. Scale: 1,600:1, in SOMSO-PLAST®. After Christian Groß, Director of Studies. The model shows the cell of a protozoa: macro- and micronucleus, contractile vacuoles, cytostome with membranellae, myonemes and food vacuoles and the formation of the endo- and ectoplasm and the networkof neuronemes. A detailed block shows the structure of the pellicle of the ectoplasm and the position and order of the trichocysts and a range of cilia in typical order. Separates into 2 parts. On a stand with green base.