Abstract
An analysis of the distribution of trace metals in the kidney cortex in normal and brindled male mice has been carried out with a scanning proton microprobe. Enzyme histochemical staining techniques were used to distinguish between proximal and distal tubules. Average copper levels were increased in brindled kidney tissue sections, with the above-normal Cu accumulation found to occur entirely within the proximal tubules. Therefore, the proximal tubule is now regarded as the location where the defect in Cu transport in brindled mice is manifested the most clearly. The distribution of Fe was found to be non-uniform with some tubule cross-sections exhibiting high concentrations in both genotypes. The distribution of Zn was found to be uniform, and the concentration was similar for each genotype.
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