Fig. 3From: Comparison of virulence of Francisella tularensis ssp. holarctica genotypes B.12 and B.FTNF002-00Histological picture of the spleen of a Francisella tularensis ssp. holarctica genotype B.FTNF002-00 infected Fischer 344 rat. Typical necrotic foci (hematoxilin-eosin, left) and the accumulation of F. tularensis antigen primarily at the edges of the necrotic area (immunohistochemistry, right). Bar = 50 μmBack to article page