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Fig. 4


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(A) Bactericidal activity in serum (expressed in % to blank control; n = 15 per treatment., (B.) plasma lysozyme levels (IU mL‑1; n = 15 per treatment. and (C) leucocyte counts in giant gourami blood (%;n = 9 per treatment. fed with four levels of fresh Azolla in replacement of commercial pellets (100%, 56%, 26% and 0% Azolla for treatments A, B, C and D, respectively). Data are means ± SD. Different letters indicate significant differences between treatments.

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