Resistance to Chronic Toxoplasma gondii Infection Induced by a DNA Vaccine Expressing GRA16

Figure 1

Determination of IgG antibody response induced by DNA immunization with pVAX-GRA16, pVAX I, PBS, and negative controls in the sera of Kunming mice at 0, 2, 4, and 6 weeks by ELISA. Each bar represents the mean OD (±SE, ). , , and ; NS: not significant.