Ruska et al., loc. cit.; Rickettsiaformis muris Zhdanov and Korenblit, Jour. Microbiol., Epidemiol, and Immunobiol. (Russian), No. 9, 1950; Chlainydozoon murinus Ryzhkov, Voprosy Meditsinskoi Virusologii (Prob- lems of Medical Virology), Akad. Med. Nauk, S.S.S.R., Moskau, 3, 1950, 17.) bron.cho.pneu.mo'ni.ae. Gr. noun bron- chus trachea, bronchus; Gr. noun pneumonia pneumonia; M.L. noun bronchopneumonia bronchopneumonia; M.L. gen. noun broncho- pneumoniae of bronchopneumonia. Coccoid cells resemble those of Miyagawa- nella pneumoniae. Cultivation: Same as for Miyagaivanella lymphogranulomatosis . Does not grow in the allantoic cavity of the chick. Immunology: Same as for M. lympho- granulomatosis, but no soluble antigen has been demonstrated. Toxic factor: High concentrations of this agent in heavily infected yolk sacs and in yolk injected intravenously are verj' rapidly fatal to mice. Pathogenic for mice, hamsters and fer- rets. Produces a moderately severe pneumo- nitis. Tissue tropism: Shows a predilection for the lungs. In mice, it is also infective by the intravenous route. Antibiotic- and chemo-therapy: Suscep- tible to sulfonamides and to antibiotics. Source: Found in the lungs of certain stocks of the laboratory mouse. Habitat: The etiological agent of mouse pneumonitis. 6. Miyagawanella felis Rake, 1948. (Rake, in Manual, 6th ed., 1948, 1118 Ehrlichia felis Krassilnikov, Guide to the Bacteria and Actinomycetes, Izd. Akad Nauk, U.S.S.R., Moskau, 1949, 7i3;Rickett siaformis felis Zhdanov and Korenblit Jour. Microbiol., Epidemiol, and Immuno biol. (Russian), No. 9, 1950, 43; Chlamydo- zoon felis Ryzhkov, Voprosy Meditsinskoi Virusologii (Proli. Mod. Virol.), Akad. Med Nauk, S.S.S.R., Mo.skau, 3, 1950, 17; Miya gawanella felinis Sprockhoff, Deutsch Tierarztl. Wochnschr., S3-U, 1953, 256.) fe'lis. L. noun felis the cat. Coccoid cells resemble those of Miyagawa nella lymphogranulomatosis. Cultivation: Same as for Miyagawanella psittaci. Immunology': Same as for M. psittaci, but nothing is known about inapparent infec- tions in the natural host, the domestic cat. Toxic factor: Infected yolk sac or other membranes and yolk or other fluids are rap- idly fatal when injected intravenously into mice or chicken embryos or intraperiton- eally into mice. Pathogenic for cats, hamsters, mice and chicken embryos. Causes a fatal pneumo- nitis with acute conjunctivitis in cats. Tissue tropism: Shows a predilection for the lungs and for the conjunctivae. In lab- oratory rodents this species is infective by the intranasal, intraperitoneal, intracere- bral and intravenous routes. Antibiotic- and chemo-therapy: Same as for Miyagawanella ornithosis. Source: From the lungs of infected cats. Habitat: The etiological agent of one form of cat nasal catarrh, influenza or dis- temper (Baker, Science, 96, 1942, 475) and feline pneumonitis. 7. Miyagawanella louisianae Rake, 1948. (Rake, in Manual, 6th ed., 1948, 1118; Ehrlichia lousianae (sic) Krassilnikov, Guide to the Bacteria and Actinomycetes, Izd. Akad. Nauk, U.S.S.R., Moskau, 1949, 743.) lou.i.si.a'nae. M.L. noun Louisiana the state Louisiana; M.L. gen. noun louisianae of Louisiana. Coccoid cells resemble those of Miyaga- wanella psittaci. Filterability: Passes through Berkefeld N and Mandler 6, 7 and 9 filters. Cultivation : Grows in the yolk sac of the chicken embryo. Immunology : Indistinguishable from other miyagawanellae by complement-fixa- tion tests with yolk-sac antigens. Partly distinguished from Miyagawanella psittaci and M. ornithosis by active immunization in mice and guinea pigs. Pathogenic for man, guinea pigs, cotton rats, mice and chicken embryos. Slightly pathogenic for white rats, golden hamsters and deer mice. Monkeys {Macacus rhesus), rabbits, muskrats and nutria are unaffected.
