We examined the physiological (hemolymph glucose, lactate, and lipid) and innate non-specific immune responses (total hemocyte count (THC), phenoloxidase (PO) activity, respiratory bursts (release of superoxide anion, O2-) and superoxide dismutase (SOD) activity) to white spot syndrome virus (WSSV) in white shrimp (Litopenaeus vannamei) that were individually injected with 0.1, 0.5, and 1 ng g-1ferritin. Results showed that the THC, PO activity, and respiratory bursts of L. vannamei obviously increased (p 0.5 ng g-1ferritin. Ferritin does play important roles in the innate immunity of the white shrimp. We observed higher SOD activities of L. vannamei that had received 0.1, 0.5, and 1 ng ferritin after 12 h than those that had received only saline (control), and the high SOD expression remained at the same levels even after 72 h of treatment. © 2009 Elsevier Ltd. All rights reserved.
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