吸烟者肺泡巨噬细胞含有硅酸铝粒子,其成份和结晶与高岭土相同。而高岭土作业工人常患尘肺。然而,吸烟者肺脏中硅酸铝和肺疾患的关系仍未可知。因而作者调查了无粉尘接触史的、年龄和性别配对的吸烟者和不吸烟者肺中硅(Si)和铝(Al)浓度和肺气肿情况。选用34名(18名有吸烟史,16名不吸烟者)成年人的左肺,所有肺脏是从弗蒙特州因意外死亡剖检的居民中收集。标本放于甲醛中固定7天后,切成三厚片,取中央厚片按 Gough 和 Wentwort 的Whimster 改良法加工,肺气肿用 Thurlbeck 百分 Smokers Alveolar macrophages contain aluminum silicate particles, the composition and crystallization of the same as kaolin. Kaolin workers often suffer from pneumoconiosis. However, the relationship between aluminum silicate and lung conditions in smoker lungs remains unknown. The authors therefore investigated silicon and aluminum (Al) concentrations and emphysema in the lungs of smokers and nonsmokers paired with age and sex without history of exposure to dust. The left lung was selected from 34 adults (18 with a history of smoking, 16 non-smokers) and all lungs were collected from residents who were killed by an accidental death in Vermont. The specimens were fixed in formaldehyde for 7 days and cut into three thick slices. The central slice was processed using Whimster’s modified method by Gough and Wentwort. The Thurlbeck percentage of emphysema