TABLE 2.
Time course of B. henselae invasion of feline RBC, based on gentamicin selection
| Expt | Time point (h) | Inoculum (CFU)a | Recovered CFU/sample | % of inoculum recovered |
|---|---|---|---|---|
| 1 | 1 | 1.2 × 106 | 0 | 0 |
| 1 | 1.2 × 107 | 0 | 0 | |
| 4 | 1.2 × 106 | 0 | 0 | |
| 4 | 1.2 × 107 | 8.5 × 10b | <1 | |
| 8 | 1.2 × 106 | 5.0 × 102b | <1 | |
| 8 | 1.2 × 107 | 1.0 × 103b | <1 | |
| 24 | 1.2 × 106 | 2.8 × 105 | 23 | |
| 24 | 1.2 × 107 | 2.4 × 106 | 20 | |
| 2 | 1 | 1.0 × 105 | 0 | 0 |
| 1 | 1.0 × 106 | 0 | 0 | |
| 4 | 1.0 × 105 | 0 | 0 | |
| 4 | 1.0 × 106 | 8.5 × 102b | <1 | |
| 8 | 1.0 × 105 | 2.5 × 102b | <1 | |
| 8 | 1.0 × 106 | 1.5 × 103b | <1 | |
| 24 | 1.0 × 105 | 2.0 × 104 | 20 | |
| 24 | 1.0 × 106 | 1.0 × 105 | 10 |
a
The RBC count was 1.9 × 108 to 2.5 × 108 per sample.
b
Value reflects less than 30 CFU per plate.