Table 1.

Scoring system for the nature and severity of inflammation in the lung of FA-exposed and ozone-exposed male and female mice after K. pneumoniae infection

Score	Nature and severity of lung inflammation
0	Normal
1	Minimal and suppurative, consisting of occasional degenerate neutrophils
2	Minimal, necrosuppurative and hemorrhagic, consisting of occasional degenerate neutrophils with extravasated erythrocytes and fibrin and necrotic cellular debris
3	Mild and suppurative, consisting of low numbers of degenerate neutrophils
4	Mild, necrosuppurative and hemorrhagic, consisting of low numbers of degenerate neutrophils with extravasated erythrocytes and fibrin and necrotic cellular debris
5	Moderate and suppurative, consisting of moderate numbers of degenerate neutrophils
6	Moderate, necrosuppurative and hemorrhagic, consisting of moderate numbers of degenerate neutrophils with extravasated erythrocytes and fibrin and necrotic cellular debris
7	Severe and suppurative, consisting of large numbers of degenerate neutrophils
8	Severe, necrosuppurative and hemorrhagic, consisting of large numbers of degenerate neutrophils with abundant extravasated erythrocytes and fibrin and necrotic cellular debris