noun
test subject; experimental subject
Used especially for animals or objects in experiments, rather than human participants. For human subjects, 被験者 (ひけんしゃ) is more common.
新薬の安全性を確かめるため、マウスを被験体として用いた。
To confirm the safety of the new drug, mice were used as test subjects.
この実験では、被験体にストレスを与
In this experiment, care was taken not to stress the test subjects.