noun
toxin; poisonous substance
Refers to a toxic substance produced by living organisms, such as bacteria, plants, or animals. Also used figuratively for harmful influences.
このキノコには強い毒素が含まれている。
This mushroom contains a strong toxin.
細菌が作り出す毒素が食中毒の原因になる。
Toxins produced by bacteria cause food poisoning.