Sampling artefacts in gill histology of freshwater Atlantic salmon (<i>Salmo salar</i>)

Fish gills are delicate structures, which vulnerable to damage from pathological as well non-pathological aetiologies. They frequently sampled for histology they involved in many recognised disease processes. Artefacts, arising sampling techniques, can potentially interfere with interpretation of gill histology. A range possible processes that result artefact were assessed a group freshwater Atlantic salmon ( Salmo salar ) pre-smolts. histopathologies resulted, illustrating how critical both efficiency and careful tissue handling optimal sections enable accurate histopathological interpretation.