title: Electron microscopic study of the early changes in heart valve of chickens injected with Streptococcus faecalis.
mesh_terms: D000818:Animals; D002645:Chickens; D004697:Endocarditis, Bacterial / Q000473:pathology*; D013293:Enterococcus faecalis; D006351:Heart Valves / Q000473:pathology*; D007239:Infections; D008854:Microscopy, Electron; D008943:Mitral Valve / Q000473:pathology; D013290:Streptococcal Infections / Q000473:pathology*