摘要：Studies on the behavior of asbestos fibers within tissues have shown that the only cells that regularly contain asbestos are macrophages and their derivatives. However, these cells actively incorporate the asbestos fibers by the process of phagocytosis, and there is little evidence of direct penetration. Examination of the gut lining after prolonged asbestos ingestion has shown no evidence of dust penetration either through or between the epithelial cells. The structure and arrangement of these cells is discussed, and it is suggested that they are exceptionally well adapted to prevent penetration by any solid material. Full text Full text is available as a scanned copy of the original print version. Get a printable copy (PDF file) of the complete article (4.3M), or click on a page image below to browse page by page. Links to PubMed are also available for Selected References . 255 256 257 258 259 260
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