Barely Significant
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The Effect of a Short-Term Exposure to Lead on the Levels of Essential Metal Ions, Selected Proteins Related to Them, and Oxidative Stress Parameters in Humans.

Oxid Med Cell Longev · 2017 · PMC5745737 · PMID 29387295

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marginal significanceno p-value reported
However, workers are exposed to lead primarily through the respiratory tract and upregulation of intestinal lead absorption by decreased body iron content should have marginal significance in occupational exposure.

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