Figure 3From: Infectious salmon anaemia virus infection of Atlantic salmon gill epithelial cellsDetection of virus receptor using virus histochemistry with Envision® system and 3,3’-diaminobenzidine as substrate which gives a brown colour at the binding site in Atlantic salmon primary gill epithelial cells incubated at room temperature for 1 h with ISA viral antigen (a). Negative control cells (b) NaOH treated (i.e. saponification) prior to incubation with ISA viral antigen.Back to article page