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

Table 2

Splenocyte proliferative responses and flow cytometry analysis of T cell subclasses in spleen cells between the immunization and the controls.

Groups	SI (mean ± SD)	CD3+CD4+CD8− (%)	CD3+CD8+CD4− (%)
Blank control	4.44 ± 0.78	4.17 ± 0.40	4.60 ± 0.95
PBS	3.50 ± 0.46	5.27 ± 1.82	3.60 ± 0.98
pVAX I	3.50 ± 0.51	3.43 ± 1.53	2.53 ± 1.74
pVAX-GRA16	5.53 ±	13.87 ±	6.13 ±

SI stands for stimulation index; , .