Fig. 4From: Lungworms (Metastrongylus spp.) demonstrated in domestic pigs with respiratory disease: was there a clinical relevance?Absorbance levels (mean + standard deviations) of serum antibodies to Mycoplasma hyopneumoniae, Pasteurella multocida and Actinobacillus pleuropneumoniae serotypes 2 and 3. The cut off-value for positive reactions was 0.5 for all testsBack to article page