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

Table 7

Lesion scoring (0-4) induced by vNDV in HE stained tissues of proventriculus, thymus, and heart collected from hr 2 till day 5 pi.

	Hr 2 pi	Hr 4 pi	Hr 6 pi	Hr 12 pi	Day 1 pi	Day 2 pi	Day 4 pi	Day 5 pi
Proventri-culus	00± 00(3)	00± 00(3)	00± 00(3)	0.20±0.20(3)	2.20± 0.12(3)	2.20±0.12(3)	2.27± 0.07 (3)	3.00± 0.12(3)
Thymus	00± 00(3)	00± 00(3)	00± 00(3)	00± 00(3)	00± 00(3)	1.73±0.07(3)	2.33± 0.07(3)	2.73±0.07 (3)
Heart	00± 00(3)	00± 00(3)	00± 00(3)	00± 00(3)	00± 00(3)	0.40±0.12(3)	2.40± 0.12(3)	2.47± 0.07(3)

Note. Values in brackets represent the number of chickens. Hr indicates hour. pi indicates postinoculation of the virus. Control group tissues scored 0.