NCIt definition : A species of anaerobic, Gram-positive, rod shaped bacteria assigned to the phylum
Actinobacteria. This species is non-spore forming, catalase, indole, and urease negative,
reduces nitrate, but does not hydrolyze esculin. P. propionicum is part of the normal
human oral cavity flora, but can cause canaliculitis and dacryocystitis as well as
many other infections.;
Alternative definition : CDISC: Any bacterial organism that can be assigned to the species Propionibacterium
propionicum.;