title: Interference of Mycoplasma gallisepticum with multiplication of Newcastle disease virus in chicken tracheal organ cultures.
mesh_terms: D000818:Animals; D002645:Chickens; D009174:Mycoplasma / Q000187:drug effects / Q000254:growth & development*; D009522:Newcastle disease virus / Q000254:growth & development*; D009924:Organ Culture Techniques; D010406:Penicillins / Q000494:pharmacology; D014132:Trachea
chemical_list: D010406:Penicillins