Figure 5.

Lung weight to body weight ratio in intranasally ricin-exposed and antitoxin-treated mice 30 days following ricin intoxication. Mice were intranasally intoxicated with 2LD₅₀ (7 µg/kg) ricin. Antitoxin was administered at 24 h PE. Sham group was administered PBS instead of either ricin or antitoxin. At 30 days PE, mice were weighed, and following euthanasia, lungs were harvested and immediately weighed. LWW/BW was calculated for each mouse; n = 5, 9 per group. Data are expressed as means ± SEM. *** p < 0.001.