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Table 3 Histological subtypes of 169 mesotheliomas induced by asbestos fibers and glass fibers in rats (from [[59]])

From: Quantification of short and long asbestos fibers to assess asbestos exposure: a review of fiber size toxicity

Mesothelioma* Asbestos Glass
Fusiform   
  Fibrogenic 105 9
  Osteogenic 12 2
  Giant cells 9 0
Pleiomorph   
  Medullar 23 1
  Tubulopapillar 8 0
Total 157 12
  1. *Mesothelioma classification was later modified. Fusiform morphology corresponds to sarcomatoid subtype, and fibrogenic differentiation likely corresponds to desmoplastic subtype.