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Rare Transmissible Cancer Found in Catfish | Toronto News
Scientists uncovered a shocking discovery in Lake Memphremagog, straddling the U.S.-Canada border: a rare, transmissible cancer affecting brown bullhead catfish, with 23-37% of sampled fish showing malignant melanomas. This is one of the few known cases of transmissible cancer in wild animals, alongside dogs and Tasmanian devils. Researchers suspect pollution from a 2011 flood may have triggered the outbreak, raising alarms for the lake’s 175,000 human residents who rely on it for water. Strikingly, no virus or pathogen has been identified—suggesting the cancer cells themselves are spreading…
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