ALGAE, ANIMAL, BRANCH, CAMPANELLA, CILIATE, CILIOPHORA, DARK, DARK-FIELD, DARKFIELD, FIELD, LIGHT, LM, MICROBE, MICROBIOLOGY, MICROGRAPH, MICROORGANISM, MICROSCOPIC, MICROSCOPY, ON, ONE-CELLED, ORGANISM, PROTIST, PROTISTA, PROTOZOA, PROTOZOAN, SINGLE-CELLED, TOM, UNICELLULAR,