Analysis of asbestos fibers and asbestos bodies in tissue samples from human lung. An international interlaboratory trial.
七家实验室分析五个人肺组织样本中的石棉纤维，比较不同显微镜方法的结果，发现各实验室内部结果一致但绝对值差异大，提示直接比较不同实验室数据存在困难。
In order to compare methods of counting asbestos fibers in lung tissue, seven laboratories participated in an interlaboratory trial in which tissue samples from five human lungs were analyzed. In some laboratories, fiber concentrations were assessed with the light microscope and, in others, with either scanning or transmission electron microscopes. Within each laboratory the ranking of the results was similar, but there were marked differences in the absolute values obtained by the different laboratories. It is concluded that the laboratories participating in this trial appear to produce internally consistent results, but there is difficulty in directly comparing results from one laboratory to the next.