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作者等曾发现接触棉尘提取物的动物肺气管内白细胞增加,于24小时内达到高峰,其增加程度决定于粉尘提取物的浓度。在这个工作中研究了不同粉尘细菌污染对肺中白细胞集聚的影响,并对所观察到的现象与接触有机粉尘所产生的肺部疾病的关系进行了估计。所试的粉尘来自棉花、干草、黄麻和烟草。这些粉尘水提取物中,除了烟草外均有肠杆菌,除了黄麻外均有枯草杆菌。如果将粉尘在饱和湿度和37℃贮存7天,然后用水提取,则细菌数可增加10～1,000
The authors have found increased lung tracheal leukocytes in animals exposed to the cotton dust extract peaked within 24 hours, the extent of which increases depending on the concentration of dust extract. In this work, the effects of bacterial contamination of different dusts on the accumulation of leukocytes in the lungs were studied and the relationship between the observed phenomena and lung diseases caused by exposure to organic dusts was evaluated. The dust tested came from cotton, hay, jute and tobacco. These dust water extracts, in addition to tobacco are all Enterobacteriaceae, except jute have Bacillus subtilis. If the dust is stored at 37 ° C for seven days in saturated humidity and then extracted with water, the number of bacteria may increase by 10 to 1,000