Fig. 3From: Cloning and expression of a Trichinella spiralis putative glutathione S-transferase and its elicited protective immunity against challenge infectionsSerum-specific anti-rTspGST IgG level of mice vaccinated with rTspGST determined by ELISA with crude antigens of Trichinella spiralis various stages (AW at 3 and 6 dpi, NBL, ML and IIL) and ML ES antigens. The OD values shown for each group are the mean ± SD of the antibody levels from ten mice. Asterisks indicate statistically significant differences (*P < 0.01)Back to article page