toxin
A poisonous substance produced by living organisms; synonymous with 毒素 (dokuso), but トキシン is a loanword often used in scientific or medical contexts.
from German Toxin
See also: 毒素
This bacterium produces a potent toxin.
Research on toxins contributes to advances in medicine.
Borrowed from German 'Toxin', ultimately from Ancient Greek 'toxikón' (poison for arrows).