Simultaneous ultrastructural demonstration of heavy metals (silver, mercury) and acid phosphatase

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Abstract
A histochemical technique which permits the simultaneous visualization of heavy metals and acid phosphatase at the ultrastructural level is described. The technique was applied to the anterior pituitary gland, the spinal cord and the liver. In all of the tested organs, both mercury and silver were found to accumulate primarily in the lysosomes, although small amounts of both metals could be observed in other organelles including endocytotic vesicles. In the anterior pituitary, few mercury deposits were found in the secretory granules.