title: A bactericidal substance against Pasteurella multocida produced by pig embryo tracheal explants.
mesh_terms: D000818:Animals; D000900:Anti-Bacterial Agents / Q000096:biosynthesis*; D001433:Bacteriolysis / Q000187:drug effects; D003470:Culture Media; D004622:Embryo, Mammalian; D010325:Pasteurella / Q000187:drug effects / Q000378:metabolism*; D013552:Swine; D013997:Time Factors; D014132:Trachea / Q000196:embryology / Q000254:growth & development* / Q000378:metabolism
chemical_list: D000900:Anti-Bacterial Agents; D003470:Culture Media