EN
The effect was studied of the M. expansa homogenate administered with Freund’s complete adjuvant and Propionibacterium granulosum - on the humoral response of lambs spontaneously infected with Moniezia sp. Statistically significant increase in precipitating, complement fixing and haemagglutinating antibodies was observed in lambs immunized with homogenate injected with Freund’s adjuvant. Limitation of prevalence of infection observed in immunized animals was not statistically significant.