Pathogenicity of a currently circulating Chinese variant pseudorabies virus in pigs

Table 3 Virus antigen distribution and intensity in different organs of pseudorabies virus HN1201 or Fa strain by immunohistochemistry staining

Groups	Tonsil	Lung	Lymph nodes			Brain	Cerebellum	Spleen	Liver
			Mandibular	Superficial inguinal	Mesenteric
HN1201	3+	3+	3+	2+	2+	2+	1+	2+	2+
	3+	2+	2+	2+	2+	2+	1+	3+	-
	3+	3+	3+	2+	2+	1+	2+	3+	+
	3+	3+	++	3+	2+	1+	2+	2+	2+
	3+	3+	3+	2+	3+	2+	2+	3+	3+
Fa strain	-	+	-	-	-	-	-	-	-
	-	-	-	-	-	2+	2+	-	-
	-	-	-	-	-	2+	2+	-	-
	-	-	-	-	-	2+	2+	-	-
	-	-	-	-	-	2+	2+	-	-

The positive staining signals were interpreted as negative (-), low (1+), moderate (2+), or intense (3+), according to the intensity of staining. Each row represents one pig in the corresponding group.