Amoeba protozoan - HD 映像素材

"Amoeba protozoan. Light microscopy footage of an Amoeba proteus protozoan moving in water. This is a freshwater single-celled organism that feeds on bacteria and smaller protozoa. It uses pseudopodia (cytoplasmic extensions) to engulf its food and for locomotion. The most prominent features are its nucleus (dark), vacuoles containing food (also dark), and a large contractile vacuole (round, centre). This is a large amoeba, ranging in size from 220 to 740 micrometres."