Asbestos fibers contributing to the induction of XXXX @entity3620 .

@entity1 @entity25832 @entity27950 @entity2615 @entity72316 @entity3620 @entity17110 @entity1355
To elucidate the features of the @entity1355 fibers contributing to the induction of @entity1 @entity3620 , we used high-resolution analytical electron microscopy to determine the type, number, and dimensions of @entity1355 fibers in lung and mesothelial tissues in 168 cases of @entity2615 . RESULTS: 1. Asbestos fibers were present in almost all of the lung and mesothelial tissues from the @entity2615 cases. 2. The most common types of @entity1355 fibers in lung were either an admixture of chrysotile with amphiboles, amphibole alone, and occasionally chrysotile alone. In mesothelial tissues, most @entity1355 fibers were chrysotile. 3. In lung, amosite fibers were greatest in number followed by chrysotile, @entity17110 , @entity25832 / @entity72316 , and @entity27950 . In mesothelial tissues, chrysotile fibers were 30.3 times more common than amphiboles. 4. In some @entity2615 cases, the only @entity1355 fibers detected in either lung or mesothelial tissue were chrysotile fibers. 5. The average number of @entity1355 fibers in both lung and mesothelial tissues was two orders of magnitude greater than the number found in the general population. 6. The majority of @entity1355 fibers in lung and mesothelial tissues were shorter than 5 micro m in length. CONCLUSIONS: 1) Fiber analysis of both lung and mesothelial tissues must be done to determine the types of @entity1355 fibers associated with the induction of @entity1 @entity3620 ; 2) short, thin @entity1355 fibers should be included in the list of fiber types contributing to the induction of @entity1 @entity3620 ; 3) RESULTS support the induction of @entity1 @entity3620 by chrysotile.
