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Effect of mixed live vaccine (newcastle disease and infectious bronchitis) and Mycoplasma gallisepticum on the chicken respiratory tract and on Escherichia coli infection

VaccinationVeterinary VaccineVaccine DevelopmentPoultry DiseaseEscherichia Coli InfectionNewcastle DiseaseMixed Live VaccineMicrobiologyInfection ControlMedicinePoultry Science