This webpage is maintained by the Centers for Disease Control and Prevention (CDC). The webpage provides information and resources on Abrin. "Abrin is a natural poison that is found in the seeds of a plant called the rosary pea or jequirity pea. These seeds are red with a black spot covering one end. […] Abrin is similar to ricin, a toxin that is also found in the seeds of a plant (the castor bean plant). […] Abrin is used in medical research because of its potential as a treatment to kill cancer cells. […] Abrin can be made in the form of a powder, a mist, or a pellet, or it can be dissolved in water. […] Powdered abrin is yellowish-white in color. […] Abrin is a stable substance, meaning that it can last for a long time in the environment despite extreme conditions such as very hot or very cold temperatures."
Centers for Disease Control and Prevention: http://www.cdc.gov/