Fig. 3From: Inflammogenic effect of polyacrylic acid in rat lung following intratracheal instillationGross findings at 3Â days after the instillation. The lungs in the exposed groups showed ballooning at 3Â days following intratracheal instillation. A control group. B 0.2Â mg-exposure group. C 1.0Â mg-exposure groupBack to article page