150X, ANIMAL, AT, CILIATE, CILIOPHORA, DARK, DARKFIELD, EUPLOTES, EVARTS, FIELD, HYPOTRICH, HYPOTRICHIA, JAMES, LIGHT, LM, MAGNIFICATION, MICROBE, MICROBIOLOGY, MICROGRAPH, MICROORGANISM, MICROSCOPIC, MICROSCOPY, ONE-CELLED, ORGANISM, PROTIST, PROTISTA, PROTOZOA, PROTOZOAN, SINGLE-CELLED, SP, SPIROTRICH, UNICELLULAR,