Figure 1From: Interactions of highly and low virulent Flavobacterium columnare isolates with gill tissue in carp and rainbow trout Gill section of a carp challenged with the HV-isolate at SP 2. The bacterial cells (arrows) are clustered focally in an eosinophilic matrix encompassing the tips of the gill filaments (F) and extending to the middle of the gill filaments. L = gill lamella (H&E, bar = 200 μm).Back to article page