Actinomyces johnsonii Henssge et al. 2009 Henssge U. Do T. Radford D.R. Gilbert S.C. Clark D. Beighton D. Emended description of Actinomyces naeslundii and descriptions of Actinomyces oris sp. nov. and Actinomyces johnsonii sp. nov., previously identified as Actinomyces naeslundii genospecies 1, 2 and WVA 963. 2009 59 3 509 516 International Journal of Systematic and Evolutionary Microbiology Int J Syst Evol Microbiol 1466-5026 1466-5034 10.1099/ijs.0.000950-0 19244431