A science lesson, a castor oil plant seed and a Salford schoolboy.
D002368:Castor Oil; D002648:Child; D004739:England; D006801:Humans; D008297:Male; D037121:Plant Lectins; D012276:Ricin / Q000009:adverse effects*; D012639:Seeds
D037121:Plant Lectins; D002368:Castor Oil; D012276:Ricin