Table 1. The effect of treatment with lymphotoxin β-receptor immunoglobulin (LTβR-Ig) on the early accumulation of PrPSc in the inguinal lymph nodes and spleens of scrapie-inoculated mice*†.
| hu-Ig | LTβR-Ig | |||||
|---|---|---|---|---|---|---|
| Day of treatment | Right ILN‡ | Left ILN§ | Spleen | Right ILN | Left ILN | Spleen |
| 14 | ++ | − | − | +/− | − | − |
| 42 | +++ | + | + | +/− | − | +/− |
Mice were given a single intraperitoneal (i.p.) injection (100 µg) of LT β R-Ig or polyclonal human immunoglobulin G (hu-Ig), as a control, on the days indicated after inoculation with scrapie via skin scarification of the right thigh.
Tissues were taken 3 days after treatment, and the number of PrPSc-containing lymphoid follicles in inguinal lymph nodes (ILNs) and spleen from two mice was scored as follows: +++, ≥ 4 positive follicles; ++, 2–3 positive follicles; +, 1 positive follicle; +/−, 1 positive follicle in only one of the samples; −, no PrPSc detected.
Inguinal lymph node draining the site of inoculation.
Non-draining inguinal lymph node.