cells, protozoa, forms, form, stage, protozoan, protozoans, chambers, organisms, bodies, stages, algae, cell, parasites, protozoon, species, organism, spores, infusoria, setae, phase, gametes, euglena, type, zoospores, sperms, parasite, sperm, bacteria, groups, body, infections, transformation, canals, lamblia, gracilis, ancestors, spermatozoon, alga, group, rods, appendages, infection, end, vaginalis, angulosa, types, diarrhea, ancestry, protists, grazing, condition, paradoxa, trichonympha, spermatozoa, trichomonas, infusorians, ancestor, chlamydomonas, giardia, gruberi, foetus, colonies, chamber, microgametes, volvox, blooms, populations, abundance, branches, biomass, zooids, motility, origin, parasitic, appendage, symbionts, tertiolecta, cultures, segments, carter, fauna, frontalis, noctiluca, canal, swarmers, coccus, peranema, symbiont, stein, cruzi, affinities

intestinal, green, small, colonial, common, colorless, unicellular, shaped, polar, marine, heterotrophic, large, typical, only, motile, euglenoid, minute, pathogenic, termite, simple, like, primitive, prevalent, photosynthetic, active, freshwater, living, scaly, ancestral, voracious, swimming, free, harmless, polarly, symmetrical, red, ectoparasitic, nonpathogenic, commonest, digesting, colourless, aberrant, trypanosomatid, phagotrophic, collared, kinetoplastid, oval, anaerobic, cellulolytic, spherical, polymastigote, barophilic, persistent, unidentified, adult, celled, related, solitary, peculiar, ingested, encysted, pyriform, autotrophic, cultivated, folded, protozoal, rare, brown