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Energy dispersive x-ray microanalysis was used to analyze mitochondrial and lysosomal iron-containing deposits in sideroblastic anemia. Although it has been previously known that these deposits contain iron by inference from Prussian blue staining, the possible presence of other cations as well as the nature of the anions present has not been identified. The results show that the mitochondrial deposits in erythroid cells have peaks for iron and phosphorus indicating that they do not represent calcifications which commonly occur following injury and that the principal anion may be phosphorus. Studies of hemosiderin and ferritin aggregates in lysosomes of macrophages in the same bone marrow samples again reveal similar peaks for iron and phosphorus. The results also indicate the probable similarity of mitochondrial and macrophage deposists although ferritin itself was never identified in the mitochondrial deposits. The results illustrate the potential of this method for diagnostic and investigative pathology.
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R E Bulger
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B F Trump, and
I K Berezesky, and
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R E Bulger
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B F Trump, and
I K Berezesky, and
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W J Mergner, and
R E Bulger
March 1990,
Oral surgery, oral medicine, and oral pathology,
