Fig. 4. Cellular innate immune parameters of head-kidney leucocytes from European sea bass specimens fed with different diets (control, Pdp11, date palm or mixture) after 2 and 4
weeks of experiment. A. Respiratory burst. B. Peroxidase activity. C. Phagocytic ability. D. Phagocytic capacity. Bars represent the mean ± SEM (n ¼ 6). Different letters denote
significant differences between treatment groups (P 0.05).