Ключевые слова: animal, biological, biology, biotechnology, cell, ciliary, ciliate, college, disease, division, education, fauna, laboratory, lesson, life, macro, magnification, marine, medical, medicine, micro, microbiology, micrograph, microorganism, microscope, microscopic, microscopy, nucleus, organic, organism, paramecium, plankton, pond, primitive, protozoa, protozoan, school, science, scientific, slide, small, tiny, training, unicellular, water, zoology,