Abstract
The leukocyte migration-inhibition test was employed to demonstrate the presence of cell-mediated immunity and to ascertain its relation to immunoglobulin production in Mycoplasma synoviae infection in chickens. With peripheral leukocytes and a preparation of M. synoviae used as antigen, good discrimination was obtained between naturally or experimentally infected birds and uninfected control birds. Only the infected groups showed significant inhibition. Positive migration inhibition values developed in the second week of infection, often before the appearance of hemagglutination-inhibition titers, and continued to accompany the production of immunoglobulins with some degree of correlation for at least 6 or 12 months.
Published Version
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