Some Cancers Become Contagious

So far, six animal species are known to carry transmissible, “parasitic” forms of cancer, but researchers are still mystified as to how cancer can become infectious.

Written byKatarina Zimmer
| 18 min read
tazmanian devils fighting cancer

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The untrained eye likely wouldn’t have noticed, but doctoral student Ruth Pye immediately spotted something unusual about the way the cells were arranged in a tissue sample from a facial tumor of a Tasmanian devil. Tumor cells plucked from the marsupials normally grew and divided more slowly, but these established themselves much faster in culture, and had longer projections extending from their spindle-shaped cell bodies, she recalls.

It was early 2014, and Pye was examining a biopsy taken from a diseased devil on a remote peninsula on the southeast side of Tasmania. Her lab at the Menzies Institute for Medical Research at the University of Tasmania received such samples as part of a government-sponsored monitoring program to study the notorious cancer that had been decimating populations of the island’s namesake marsupial. Known as devil facial tumor disease (DFTD), the cancer differs from most in that it ...

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Meet the Author

  • katya katarina zimmer

    After a year teaching an algorithm to differentiate between the echolocation calls of different bat species, Katarina decided she was simply too greedy to focus on one field of science and wanted to write about all of them. Following an internship with The Scientist in 2017, she’s been happily freelancing for a number of publications, covering everything from climate change to oncology. Katarina is a news correspondent for The Scientist and contributes occasional features to the magazine. Find her on Twitter @katarinazimmer and read her work on her website.

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