. 2013 Mar;20(3):369–376. doi: 10.1128/CVI.00497-12

Table 2.

Histopathologic lesions and antigen levels for PCV2 and PRRSV in different groups at 21 dpc^a

Group no.	Histopathology score		PCV2 antigen level		PRRSV antigen level
Group no.	Lung	Lymph node	Lung	Lymph node	Lung	Lymph node
1	0.5 ± 0.53^b	0.37 ± 0.51^c	7 ± 5.09^b	17 ± 6.05^c
2	2.12 ± 0.64^a	0.62 ± 0.74^c	6.5 ± 5.44^b	20 ± 6.87^c	26.5 ± 5.44^b	4.5 ± 2.03
3	0.87 ± 0.64^b	0.5 ± 0.53^c			14.75 ± 4.03^c	5.5 ± 1.29
4	2.75 ± 0.7^a	3.87 ± 0.83^a	44 ± 5.29^a	61 ± 8.2^a	40.5 ± 3.69^a	6.5 ± 2.08
5	0.4 ± 0.23^b	0.45 ± 0.42^c	8 ± 6.91^b	22 ± 10.28^c	16.5 ± 4.38^c	4 ± 2.63
6	0.75 ± 0.7^b	2.12 ± 0.64^b	13.5 ± 5^b	43.5 ± 8.69^b
7	2.25 ± 0.7^a	0.5 ± 0.53^c			27.75 ± 3.77^b	8.5 ± 2.64
8	2.87 ± 0.64^a	4.25 ± 0.7^a	53 ± 4.24^a	67.5 ± 8.38^a	41.75 ± 5.9^a	7.5 ± 2.64
9	0.25 ± 0.46^b	0.25 ± 0.46^c

Data are means ± standard deviations. The antigen level in the lung means the number of positive cells per unit area (0.95 mm²). The antigen level in the lymph node means the number of positive cells per unit area (0.25 mm²). Different letters (a, b, and c) indicate significant (P < 0.05) differences between groups.