Scientists Hacked a Locust's Brain To Sniff Out Human Cancer
Cyborg locust brains can help spot the telltale signs of human cancer in the lab, a new study has shown. The team behind the work hopes it could one day lead to an insect-based breath test that could be used in cancer screening, or inspire an artificial version that works in much the same way. From a report: Other animals have been taught to spot signs that humans are sick. For example, dogs can be trained to detect when their owners' blood sugar levels start to drop, or if they develop cancer, tuberculosis, or even covid. In all cases, the animals are thought to be sensing chemicals that people emit through body odor or breath. The mix of chemicals can vary depending on a person's metabolism, which is thought to change when we get sick. But dogs are expensive to train and look after. And making a device that mimics a dog's nose has proved extremely difficult to do, says Debajit Saha, one of the scientists behind the latest work, which has not yet been peer-reviewed. "These changes are almost in parts per trillion," says Saha, a neural engineer at Michigan State University. This makes them hard to pick up even with state-of-the-art technologies, he adds. But animals have evolved to interpret such subtle changes in scents. So he and his colleagues decided to "hijack" an animal brain instead.
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