bacteroides, lactobacilli, metazoan, commensal, borrelia, symbiont, proteoglycan, nephron, ribosomal rna, intestinal flora, protists, mycobacteria, mucins, mycobacterium, phenotype, epithelia, proteolysis, eicosanoids, xenobiotic, plastids, chlamydial, actinomycetes, oncogenesis, amphioxus, helminth, symbioses, staphylococci, protozoan, lymphoid tissue, homozygosity, ecotypes, urease, ciliates, adrenal cortex, xenopus laevis, genus plasmodium, glycolipids, treponema, schistosoma, ontogeny, proteases, corynebacterium, leydig cell, ultrastructure, teleost fish, spirochete, planaria, subfamily, thyrotropin, pyrimidines, osteoblast, organism, endonuclease, saccharomyces, innate immunity, chlamydomonas, umbilical vein, suppressor gene, plasminogen, eukaryote, lymphocytic, erythrocytes, lipids, coevolution, metaplasia, neuroendocrine, anaerobes, trypanosome, monocyte, nitrogen fixation, introgression, pathogen, striated muscle, genotypes, acetylation, organogenesis, clostridia, arginase, neisseria gonorrhoeae, peroxisome, efferent, aetiology, bacterium, albicans, gene expression, globin, midgut, dpp, glycosylation, parasitoid, pestis, calculi, anterior pituitary, tubule, microorganism, glucosides, borrelia burgdorferi, epistasis, pathogenesis, herpesviruses, exocrine, morphogenesis, microflora, flora, biota, microorganisms, spirochetes, biofilms, bacteria, ecosystem, fauna, microbes, biofilm, microenvironment, organisms, secretions, biosphere, infections, micro, protozoa