Table 5. Pathogenesis of infection with LP VN/1203/K and LP VN/1203/E in chickens.
Virus | Day pi | No. Ag+ (Ave Score of Positive Tissues)A | Virus Isolation: No Pos/TotalB | |||||||
Heart | Brain | SkinC | OtherD | Spleen | Lung | Brain | ThromE | TotalF | ||
K | 1 | 0/6 | 0/6 | 0/6 | 0/6 | 1/6 | 0/6 | 0/6 | 0/6 | 1/6 |
2 | 0/6 | 0/6 | 0/6 | 0/6 | 0/6 | 1/6 | 0/6 | 0/6 | 1/6 | |
3 | 0/6 | 0/6 | 0/6 | 0/6 | 0/6 | 0/6 | 0/6 | 0/6 | 0/6* | |
4 | 0/6 | 1/6 (1) | 1/6 (1) | 1/6 (1) | 2/6 | 1/6 | 2/6 | 0/6 | 2/6 | |
5 | 0/6 | 0/6 | 0/6 | 0/6 | 0/6 | 0/6 | 2/6 | 0/6 | 2/6 | |
E | 1 | 0/6 | 0/6 | 0/6 | 0/6 | 1/6 | 1/6 | 0/6 | 0/6 | 2/6 |
2 | 0/6 | 0/6 | 0/6 | 0/6 | 0/6 | 1/6 | 0/6 | 0/6 | 1/6 | |
3 | 1/6 (1) | 0/6 | 1/6 (1) | 1/6 (1) | 5/6 | 4/6 | 5/6 | 0/6 | 6/6* | |
4 | 1/6 (1) | 1/6 (1) | 1/6 (1) | 1/6 (1) | 1/6 | 1/6 | 1/6 | 1/6 | 3/6 | |
5 | 2/6 (1) | 1/6 (1) | 2/6 (1) | 2/6 (1) | 1/6 | 3/6 | 1/6 | 0/6 | 3/6 | |
UC | 1+5 | 0/6 | 0/6 | 0/6 | 0/6 | 0/12 | 0/12 | 0/12 | 0/12 | 0/12 |
Number of samples positive for virus antigen as measured by immunohistochemistry. Scoring system: 1 = Antigen sparse, 2 = Antigen common, 3 = Antigen abundant.
Virus isolation was performed by inoculation of 3 embryonated chicken eggs per tissue sample.
Includes dermis of feathered skin, feather pulp and comb; for other tissues see the result section.
Other tissues are liver, kidney tubules, spleen, lung interstitium, connective tissues, lymphoid follicles, and salivary glands.
Thrombocytes.
Number of birds with one or more positive tissues.
*Significantly different from each other (P<0.05, two-tailed Fisher's exact test).