Abrin is a highly toxic protein that is derived from the seeds of the plant Abrus precatorius, also known as the rosary pea or jequirity bean. The brightly colored seeds of this plant contain about 0.08% of abrin. The toxin is found within the seeds and its release is prevented by the seed coat. If the seed coat is injured or destroyed (by chewing, for example) the toxin may be released. The toxic effects of abrin were first reported in the late 19th century when it was used as a poison in India.