title: Origin of microorganisms in traumatized, pulpless, sound teeth.
mesh_terms: D000818:Animals; D001775:Blood Circulation; D003782:Dental Pulp / Q000293:injuries* / Q000382:microbiology*; D003786:Dental Pulp Cavity / Q000382:microbiology*; D003788:Dental Pulp Diseases / Q000209:etiology; D004285:Dogs; D005881:Gingiva; D000882:Haplorhini; D012706:Serratia marcescens / Q000302:isolation & purification