Figure 2.
Top left: Histological sections of anterior gut (left) and posterior gut (center) fed with (A) FO- and (B) SBO-based diets, stained in Alcian Blue-PAS. Top right: histological section of skin fed with fish oil and stained with Toluidine Blue (scale bar = 300 μm). Bottom: Mucous cell area (μm2) depending on tissue and diet. From left to right: anterior gut, posterior gut, and skin, differentiated significantly by a dotted line (P = 2e–16, F-test). Green color is soybean oil and blue color is fish oil. N = 36 fishes.