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Fig. 1 | BMC Veterinary Research

Fig. 1

From: Measuring antigen-specific responses in Mycobacterium bovis-infected warthogs (Phacochoerus africanus) using the intradermal tuberculin test

Fig. 1

Differential in skin fold thickness (Δ PPDb) at the PPDb injection site after 72 h in M. bovis culture-positive or culture-negative warthogs. Median and interquartile ranges are represented by the horizontal bars. The dotted lines represent the various published cut-off values used in other species (1, 2 and 4 mm). ** indicates p < 0.01, *** indicates p < 0.001

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