Cultivation 



435 



ABC 



Fig. 130. Actinomycosis ; glycerin-agar cultures: A, Discrete 

 rounded colonies after about ten days' incubation at 37 C. ; B, 

 limpet-shaped colonies three and a half months old ; C, lichen-like 

 appearance frequently seen ; the growth is three and a half months 

 old (Curtis). 



