2Pfotzner H,Sachse K. Mycoplasma bovls as magent of mastitis, pneumonia,arthritis and genital disorders scientific and technical review [J]. Offices International Des Epizooties, 1996, 15 (4) : 1477-94.
4Uemori T,Asada K. Amplification of the 16s-23s spacer regions in rRNA operons of mycoplasma by PCR [J]. System Appl Micro-biol, 1992,15 : 181-6.
5Razin S. Adherence of pathogenic mycoplasma to host cells[J]. Biosci Rep,1999,19(5) :367-72.
6Nicholas RAJ, Ayling RD, Laszlo P, et al. An experimental vac-cine for calf pneumonia caused by Myenplasma boris ; clinical, cultural, serological and pathological findings [J]. Vaccine, 2002,20 : 3569-75.
7Robino P, Alberti A, Pittau M, et al. Genetic and antigenic characterization of the surface lipoprotein P48 of Mycoplasma bo-ris[J]. Veterinary Microbiology, 2005,109 : 201-9.