A non-pathogenic mycoplasma inhibiting the effect of a pathogenic mycoplasma in organ culture.
D000818:Animals; D002465:Cell Movement; D002642:Chick Embryo; D002923:Cilia; D004847:Epithelial Cells; D004848:Epithelium / Q000382:microbiology; D009174:Mycoplasma / Q000254:growth & development / Q000472:pathogenicity*; D009924:Organ Culture Techniques; D013045:Species Specificity; D013997:Time Factors; D014132:Trachea / Q000166:cytology