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Macrophages phagocytose cells that die during programmed cell death and the nuclei that are expelled from erythroid precursor cells during erythropoiesis; subsequently, the ingested DNA is degraded in their lysosomes. A defect in this lysosomal DNA degradation activates the macrophages to produce cytokines such as IFNβ and TNFα in a Toll-like receptor (TLR)-independent manner. IFNβ thus produced in...
Depleted uranium entering the body as a result of inhalation or embedded fragments becomes associated to a great extent with macrophages. As part of our continuing studies on the health effects of internalized depleted uranium, we investigated the effect of soluble depleted uranium-uranyl chloride on the mouse macrophage cell line, J774. Using a cytochemical staining protocol specific for uranium,...
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