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. 2016 Jan 6;105:15–22. doi: 10.1016/j.rvsc.2016.01.001

Table 3.

Histopathology kidney lesion scores in SPF chicks infected with IBV IS/885 strain.

Kidney lesions SPF (days post infection)
3 6 9 12 15 21 28
Epithelial degeneration 0.0 ± 0.0 0.0 ± 0.0 0.6 ± 0.2 0.2 ± 0.2 0.0 ± 0.0 0.0 ± 0.0 0.0 ± 0.0
Ducto-tubular dilation 0.4 ± 0.2 0.4 ± 0.2 0.2 ± 0.2 0.0 ± 0.0 0.0 ± 0.0 0.0 ± 0.0 0.0 ± 0.0
Heterophil infiltration 0.2 ± 0.2 1.0 ± 0.0a 0.2 ± 0.2 0.0 ± 0.0 0.0 ± 0.0 0.0 ± 0.0 0.0 ± 0.0
Lymphoid infiltration 0.0 ± 0.0 0.0 ± 0.0 1.0 ± 0.0 1.6 ± 0.2 1.0 ± 0.0 0.6 ± 0.2 0.4 ± 0.2
Epithelial regeneration 0.0 ± 0.0 0.0 ± 0.0 0.2 ± 0.2 0.2 ± 0.2 0.8 ± 0.2 0.0 ± 0.0 0.0 ± 0.0
Epithelial hyperplasia 0.2 ± .02 0.0 ± 0.0 0.6 ± 0.2 0.2 ± 0.2 1.0 ± 0.0a 0.0 ± 0.0 0.0 ± 0.0
Lymphoid nodules 0.0 ± 0.0 0.0 ± 0.0 0.6 ± 0.2 0.8 ± 0.2 1.0 ± 0.0a 0.4 ± 0.2 0.8 ± 0.2

Data are expressed as the mean histopathological lesion score ± SEM (n = 5). Kidney lesions scores as follows: no change (0), mild (1), moderate (2) or severe (3). For each time point and lesions, different superscripts for infected SPF (Table 3) and broiler (Table 4) chicks indicate significant differences between them (p < 0.05). Absence of a letter indicates that there were no significant differences (p > 0.05).