TABLE 3.
Trypanocidal activity in serum samples from Cape buffalo 7810, 7813, and 7752a
| Day of infection | Lowest concn (% [by vol]) of serum at which trypanocidal activityb was detected on:
|
|||
|---|---|---|---|---|
| T. brucei GUTat 3 | T. congolense 300 | T. congolense 2642 | T. congolense 3338 | |
| 0 | −, −, − | −, −, − | −, −, − | −, −, − |
| 9 | −, −, − | −, −, − | 96, −, 96 | 96, −, − |
| 11 | 48, 48, 48 | 48, 48, 48 | 48, 48, 48 | 48, 96, 48 |
| 14 | 96, 96, 96 | 96, 96, 96 | 96, 96, 96 | 96, −, 96 |
| 18 | −, −, − | −, −, − | −, −, − | −, −, − |
a
Data for cattle are omitted because no trypanocidal activity was detected.
b
Assays were set up as described for Table 2 except that test sera had been heated at 56°C for 30 min. Trypanosomes were examined after a 2-h incubation. Results are presented as the last serum dilution in which all trypanosomes were intact but nonmotile. −, no trypanocidal activity observed.