Barely Significant
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Reduced pulmonary function and increased pro-inflammatory cytokines in nanoscale carbon black-exposed workers.

Part Fibre Toxicol · 2014 · PMC4318129 · PMID 25497989

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marginally significantno p-value reported
A UK study showed a marginally significant increase of lung cancer in CB production workers [ 15 ], however, the follow-up investigation demonstrated that this increase was not related to cumulative CB exposure, but a combination of factors including prevalence of smoking, previous occupations, social class, and regional effects unrelated to smoking habits [ 16 ].

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