Scoring System for Lesions Induced by Different Strains of Newcastle Disease Virus in Chicken

Table 11

Lesions scoring induced by velogenic and lentogenic NDV strains in HE stained brain, caecal tonsil, liver, and bone marrow tissues on day 5 pi.

	vNDV	lNDV	Control
Brain	0.12 ± 08 (5)	0.36 ± 07 (5)	00 ± 00 (5)
Caecal tonsil	2.96 ± 0.04 (5); 3.00^∗∗	0.96 ± 16 (5); 1.7	00 ± 00 (5)
Liver	3.00 ± 00 (5)	1.16 ± 0.04 (5)	00 ± 00 (5)
Bone marrow	NA	3.0	00 ± 00 (3)

Values between brackets indicate the number of examined tissues.
scoring of tissues inoculated with LaSota 1 and 2 when chickens were 21 days old and 31 days old, respectively. Lesions were recorded when chickens were 40 days old [5].
scoring of tissues inoculated with LaSota (GenBank accession numberAF077761). Lesions were recorded 4 days pi [6].
^∗∗Lesion scoring of tissues infected by Quail2006 isolate, isolate’s name includes avian species and year of isolation, velogenic strain, and lesions were recorded 4 days pi, chicken embryo mean death time (MDT) = 47.0, intra-cerebral pathogenicity index (ICPI) = 1.94, GenBank accession number EU518684, [9].
NA = Tissues were not collected.