title: [Intracutaneous reaction by dental calculus causing periodontal diseases].
mesh_terms: D000596:Amino Acids / Q000032:analysis; D000818:Animals; D002849:Chromatography, Gas; D003460:Crystallization; D003728:Dental Calculus / Q000276:immunology*; D005029:Ethylenediamines / Q000032:analysis; D005891:Gingivitis / Q000175:diagnosis; D006168:Guinea Pigs; D006801:Humans; D007271:Injections, Intradermal; D008854:Microscopy, Electron; D009584:Nitrogen / Q000032:analysis; D010510:Periodontal Diseases / Q000209:etiology / Q000276:immunology*; D012882:Skin Tests; D013057:Spectrum Analysis
chemical_list: D000596:Amino Acids; D005029:Ethylenediamines; D009584:Nitrogen