oral, other, pathogenic, many, numerous, certain, few, large, motile, anaerobic, nonpathogenic, intestinal, live, small, syphilitic, various, borne, most, parasitic, typical, viable, coiled, saprophytic, living, symbiotic, subgingival, virulent, similar, related, characteristic, thin, smaller, sized, active, cultivable, cultured, pale, dead, termite, abundant, indigenous, associated, innumerable, commensal, demonstrable, negative, causative, aerobic, intermediate, infectious, porcine, ectosymbiotic, flexible, visible, slender, periodontal, fluorescent, ixodid, rumen, hemolytic, gastric, countless, pal, mobile, uncultivated, invading, shaped, bacterial, spirochetal, extracellular, adherent, fewer, producing, nontreponemal, harmless, minute, intact