Table 2.
Score of lesions detected during post mortem examination of external and internal lymph nodes of sheep post challenge.
| Groups of sheep | Mean score lesions | Total score of internal lymph nodes | Total score for each group | % of protection | % of infection | |||
|---|---|---|---|---|---|---|---|---|
| External lymph nodes | ||||||||
| RPS | LPS | RPF | LPF | |||||
| Control groups | ||||||||
| 1-Challenged with biotype 1 | 3/3 | 3/3 | 3/3 | 0/3 | 3/3 | 12/15 | 20 | 80 |
| 2-Challenged with biotype 2 | 3/3 | 3/3 | 3/3 | 1/3 | 3/3 | 13/15 | 13.4 | 86.6 |
| Vaccinated group with vaccine (A) | 0/3 | 0/3 | 0/3 | 0/3 | 0/3 | 0/15 | 100 | 0 |
| Vaccinated group with vaccine (B) | 0/3 | 0/3 | 0/3 | 0/3 | 0/3 | 0/15 | 100 | 0 |
Score: 0 = Normal of slightly enlarged LN (0/3).
1 = Enlarged lymph node (1/3).
2 = Enlarged and congested or hemorrahagic (2/3).
3 = Enlarged lymph node with focal abscess or caseation (3/3).
RPS: Right prescapular lymph node.
LPS: Left prescapular lymph node.
RPF: Right prefemoral lymph node.
LPF: Left prefemoral lymph node.
Internal lymph node one unit (Inguinal, tracheobronchial thoracic, mesenteric, 2 popliteals).