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Table 1 Semi-quantitative evaluation of histological inflammation in lung sections.

From: Lung responses to secondary endotoxin challenge in rats exposed to pig barn air

Treatment groups Peri-vascular inflammation Peri-bronchiolar inflammation Peri-vascular edema
Control - to + - to + - to+
Control+LPS + + to + + + + + to+ + + + to+ +
1 day exposure + + to+ + + + + to + + + + + + + +
1 day exposure+LPS + + to + + + + + + to + + + + + + to + + + +
5 day exposure + to + + + + to + + + + + to + + +
5 day exposure + LPS + + to + + + + + + + to + + +