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Corrosion cast of a kidney

The blood vessels of a normal left kidney are demonstrated in this technique called corrosion-casting. Coloured resin, in a liquid state, is injected into the vessels under pressure. After the plastic hardens the tissue is removed by immersion in hydrochloric acid. Different coloured resin has been used to distinguish veins (red), arteries (blue) and the renal pelvis (yellow). The fluid is water and acts simply as cushioning.

Corrosion cast of a kidney
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