Group | Target | Number injected | Injection volume (μl) | Positive brain infections (%) |
---|---|---|---|---|
PMV wall | ||||
1 | HPV wall: from the porta hepatis to the GVs | 13 | 1.0–1.4 | 46 |
2 | HPV wall: between the GV and SV | 8 | 2.0 | 50 |
3 | SMV wall: upstream from the SV | 8 | 0.8–1.8 | 63 |
4 | HPV + SMV wall: from the porta hepatis to the proximal SV | 15 | 1.5–4.5 | 40 |
PMV lumen | 6 | 2.0 | 0 | |
PMV surface | 5 | 2.0 | 20* |
Four regions of the HPV and SMV walls were injected with H129. See Figure 1 for the details of these locations. In addition, two control regions, the HPV lumen and surface were administered with H129.
↵* One PMV surface animal showed positive H129 in the same dorsal medulla regions as the PMV wall injections. However, the injector tip of this animal punctured the surface of the PMV wall, making it likely that H129 infected the same sensory endings as those animals in the PMV wall groups.