title: Nature of factor(s) associated with the ability of some strains of mycoplasma isolated from birds, to induce lesions in chick embryos.
mesh_terms: D000818:Animals; D001717:Birds / Q000382:microbiology*; D002642:Chick Embryo; D003956:Dialysis; D006358:Hot Temperature; D009174:Mycoplasma / Q000302:isolation & purification / Q000472:pathogenicity* / Q000528:radiation effects; D011830:Radiation Effects; D014466:Ultraviolet Rays