Results The rabbit lungs showed grayish brown in color with nodular and lamellar black dust maculae.Coal dust deposited in lung interstitium.Fibroblasts proliferated.X ray showed small i...

• 结果染尘大白兔全肺呈灰褐色,多处出现点状和片状黑色尘斑,肺间质内有大量煤尘颗粒,成纤维细胞增生,X射线摄片证实两肺存在不规则小阴影或片状融合阴影及类圆形阴影等。