Table 2: Percentage of CD4+ and CD8+ lymphocytes in mice infected with T. cruzi I strains.

Strain (infection phase) ParasitesCD4+CD8+

Ninoa (acute)PBS28.8 ± 111.8 ± 0.1
1 × 1 0 4 15.1 ± 2.6*11.8 ± 2.6
1 × 1 0 5 18 ± 2.5*16.3 ± 1.9

Ninoa (chronic)PBS25.8 ± 89.9 ± 4.1
1 × 1 0 4 30.3 ± 11.623.2 ± 7.8*
1 × 1 0 5 25.3 ± 7.418 ± 8.7*

Qro (acute)PBS24 ± 3.310.5 ± 4.6
1 × 1 0 4 17 ± 3.3*11.7 ± 4.3
1 × 1 0 5 14 ± 2.5*10 ± 6

Mean ± standard deviation of three independent assays. Statistical differences between parasited and control mice are indicated ( 𝑃 < . 0 5 ) . Control mice were inoculated with phosphate buffer saline (PBS).