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Mycoplasmas and Their Pathogenicity

The principal species of mycoplasmas isolated from diseased and healthy pigs and the clinical conditions with which they have been associated are given in Table 1. However, the isolation of a mycoplasma from a disease condition is far from being conclusive evidence that the mycoplasma is the cause of the disease. Evidence for determining whether or not a mycoplasma is a primary pathogen may be considered under two main headings: (1) Experimental reproduction of the disease. (2) Epidemiological evidence.