Pathogenesis of infection with LP VN/1203/K and LP VN/1203/E in chickens.

ANumber of samples positive for virus antigen as measured by immunohistochemistry. Scoring system: 1 = Antigen sparse, 2 = Antigen common, 3 = Antigen abundant.BVirus isolation was performed by inoculation of 3 embryonated chicken eggs per tissue sample.CIncludes dermis of feathered skin, feather pulp and comb; for other tissues see the result section.DOther tissues are liver, kidney tubules, spleen, lung interstitium, connective tissues, lymphoid follicles, and salivary glands.EThrombocytes.FNumber of birds with one or more positive tissues.*Significantly different from each other (P