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Table 3 Mineralogical analysis and asbestos exposure quantification of lung tissue homogenates in control and welder patients

From: Role of metal oxide nanoparticles in histopathological changes observed in the lung of welders

  Controls Welders P value
  (n = 21) (n = 21)  
Dry lung tissue weight (mg) (Mean ± SD) 24.8 ± 7.6 21.4 ± 8.0 ns
Mineral particle concentration in lung tissue (number of particles x 107 per g; Mean ± SD)    
Total 70.2 ± 84.3 155.9 ± 148.8 0.012
Metallic 17.3 ± 22.7 73.9 ± 66.0 0.0005
Non metallic 48.8 ± 61.1 80.9 ± 105.1 ns
Asbestos exposure    
Positive occupational questionnaire 8 8  
AB/g dry lung tissue (median) 23,667 4,001 ns
[Min–Max] [165–437,175] [685–44,370] ns
> 1000 AB/g dry lung tissue (n) 7 8 ns
  1. AB: asbestos bodies; SD: standard deviation.