To view this video please enable JavaScript, and consider upgrading to a web browser that supports HTML5 video Movie 3 Solution exchange while a Paramecium is immobilized. A stained solution (Copper chlorophyllin) replaces the clear extracellular solution. A simple device to immobilize protists for electrophysiology and microinjection Anirudh Kulkarni, Irene Elices, Nicolas Escoubet, Léa-Laetitia Pontani, Alexis Michel Prevost, and Romain Brette Journal of Experimental Biology 2020. 223:None-None; doi: 10.1242/jeb.219253 Download Original Video