Fig. 3From: Comparison of a mycobacterial phage assay to detect viable Mycobacterium avium subspecies paratuberculosis with standard diagnostic modalities in cattle with naturally infected Johne diseaseA comparison of Control animals that are MAP positive or negative by the phage/qPCR assay. There are significantly fewer plaques in the plates of the Phage/qPCR assay in the MAP negative controls (Mann–Whitney two tailed p = 0.0018; displayed as **)Back to article page