Fig. 2From: Comparative analysis of humoral immune responses and pathologies of BALB/c and C57BL/6 wildtype mice experimentally infected with a highly virulent Rodentibacter pneumotropicus (Pasteurella pneumotropica) strainSemi-quantitative determination of R. pneumotropicus in the indicated tissues of BALB/c (a) and C57BL/6 (b) mice either infected experimentally (losses and survivors) or used as contact sentinels. Losses occured 2–6 dpi, survivors were sampled 28 dpi and contact sentinels 56 dpi. A low grade is equal to less than 20 CFU per plate; a middle grade refers to 20–70 CFU and a high grade to more than 70 CFU per plateBack to article page