Environmental Carcinogens
Q: What is the term for a substance that causes cancer?
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The Lymph Theory, proposed by Stahl and Hoffman in the 17th-18th centuries, replaced the Humoral Theory for a time. It suggested that life depended on the proper movement of fluids, with lymph being key. Cancer was thought to arise from lymph that stagnated, fermented, and degenerated, forming tumors of varying acidity and density.
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