Figure 4From: Pyelonephritis in slaughter pigs and sows: Morphological characterization and aspects of pathogenesis and aetiologyImmunohistochemical visualisation of Escherichia coli. Bacteria with reddish/brown positive immunohistochemical reaction for E. coli antibody are seen intratubularly and intracellularly in the tubular epithelium. The affected tubules are surrounded by leukocytes, primarily neutrophils. Bar = 10 μm.Back to article page