Figure 4From: DNA vaccination with a gene encoding Toxoplasma gondii GRA6 induces partial protection against toxoplasmosis in BALB/c miceAnti-GRA6 antibody levels in BALB/c mice (n = 15) immunized with the pcDNA3.1-HisGRA6 plasmid on days 0, 14 and 28. One group of BALB/c mice were immunized with the empty pcDNA3.1 as the control. Sera were collected at 0, 3, 5, 7 and 9 weeks post immunization. Anti-GRA6 antibodies levels were determined by indirect ELISA. *p < 0.05Back to article page