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Humans have been using
plants since prehistoric
. They are still used around the world in traditional medicine. For the first
, scientists have discovered that chimpanzees also seek out the fruits of the forest to heal themselves when
. Researchers from Oxford University in the UK conducted a
of chimpanzee behaviour at the Budongo Central Forest Reserve in Uganda. The researchers tracked a male
with an injured hand looking for the
of a fern. The fern had properties that may have reduced the
in the ape's hand. Another chimpanzee with a parasitic
sought out the bark of a cat-thorn tree. This may have helped to alleviate the animal's
.