Table 2. Number of IFNγ+ and Pfn+ cells in heart tissue sections of T. cruzi-infected C57BL/6 mice.
| dpi1 | IFNγ+ cells /100 fields2 | Pfn+ cells /100 fields | Ratio of IFNγ+/Pfn+ cells3 |
| 15 | 50±28 | 0 | 50∶0 |
| 30 | 54±17 | 5±1 | 11∶1 |
| 45 | 103±45 | 7±1 | 14∶1 |
| 60 | 105±16 | 18±3 | 5∶1 |
| 90 | 92±15 | 18±3 | 5∶1 |
| 120 | 66±7 | 17±3 | 4∶1 |
1
dpi, days post-infection with 100 bt of the Colombian T. cruzi strain.
2
The number of positive cells for each parameter was counted in 100 microscopic fields per section. Three sections were counted per each analyzed animal.
3
Ratio of IFNγ+/Pfn+ cells was determined adopting the mean number of positive cells for each parameter per 100 microscopic fields.