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Biologists studying nematode worms. Some nematode species live in the soil and feed on plant matter, and are destructive pests of agricultural crops. They can be poisoned using bromomethane, but because this chemical damages the ozone layer scientists are trying to find alternative ways of controlling nematodes. Here, biologists are using the nematode Caenorhabditis elegans as a biochemical model to identify potential methods of control.
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