<unk>  ( ) is a lectin (a carbohydrate-binding protein) and a highly potent toxin produced in the seeds of the castor oil plant,<unk> us communis. The median lethal dose (LD50) of<unk>  for mice is around 22 micrograms per kilogram of body weight via intraperitoneal injection. Oral exposure to<unk>  is far less toxic. An estimated lethal oral dose in humans is approximately 1 milligram per kilogram of body weight.
Ricin
Bempedoic acid
Domoic acid
Simmondsin
Delta-Palutoxin
Ioxaglic acid
Psalmotoxin
Vomitoxin