Differentiation of Porcine Mycoplasma Strains

Abstract
Porcine Mycoplasma strains, previously called "swine enzootic pneumonia strains " are antigenically closely related to M. hyorhinis. Other porcine Mycoplasma strains which are culturally and antigenically distinct from M. hyorhinis are more heterogeneous and fall into four serotypes. M. granularum, however, is antigenically unrelated to these strains.