lentivirus, retrovirus, paramyxoviruses, helminths, poxvirus, herpesviruses, mycobacterium leprae, entamoeba, bacteriophages, flavivirus, bacterial toxin, spirochetes, rhinoviruses, replicon, trypanosomes, infective agent, parainfluenza virus, arenavirus, toxoplasma, pan troglodytes, mycobacteria, mucins, plasminogen, trypanosoma, saccharomyces, tubercle bacillus, glycolipid, bacteroides, agrobacterium tumefaciens, pestis, urease, papillomavirus, metazoan, mycobacterium, staphylococci, chlamydial, introgression, adenovirus, reoviruses, prokaryote, francisella, trimer, xenopus laevis, plastid, variola, thymosin, whipworm, trichinella, virions, xenopus, borrelia, antibodies, ebola virus, alphavirus, subtype, teleost fish, vivax, somatostatin, lactobacilli, c. trachomatis, picornavirus, taenia, midgut, subfamily, benzimidazole, phylogenies, schistosoma, homologies, flatworm, trypanosome, hepatoma, serratia, nucleocapsid, proteinase, cytotoxin, orthopoxvirus, syngeneic, pyrimidines, corynebacterium, eukaryote, pentamidine, phage, commensal, poliovirus vaccine, streptomyces, hominoid, francisella tularensis, mus musculus, hemolysin, glycoproteins, heterozygote, lassa virus, lysin, mycobacterium tuberculosis, clioquinol, myxoma virus, mosaicism, sarcoid, erythrocytes, protozoans, planarians, ratites, retroviruses, mammals, mycoplasmas, viruses, amebae, cercariae, clones, enteroviruses, epitopes, flagellates, fossils, genomes, histones, insulins, interferons, isolates, lipoproteins, milks