title: In vitro calculus formation from Actinomyces strains of oral origin.
mesh_terms: D000190:Actinomyces / Q000302:isolation & purification / Q000378:metabolism*; D002118:Calcium / Q000378:metabolism*; D003470:Culture Media; D004577:Electron Probe Microanalysis; D066298:In Vitro Techniques; D008854:Microscopy, Electron; D012465:Salivary Duct Calculi / Q000209:etiology / Q000382:microbiology*
chemical_list: D003470:Culture Media; D002118:Calcium