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Immunoglobulin classes of antibodies produced against Toxoplasma gondii by ovine fetuses

Sera from aborted or newborn lambs with congenital toxoplasmosis were fractionated on Sephadex G-200. Sera and fractions were tested for Toxoplasma antibodies using the indirect fluorescent antibody test. Most of the antibody was found to reside in the IgG fraction.

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