Ref ID : 1067
Colin G. Ogden; Gas vacuoles and flotation in the testate amoeba Arcella discoides. J.Protozool. 38(3):269-270, 1991
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The natural formation of gas vacuoles as a method of movement is described for the testate amoeba Arcella discoides. These vacuoles are used to float the organism from the substrate to the surface in an inverted position.