Ricin defined

Several groups are currently attempting to identify the amino acids in the B chain that are responsible for cell-binding activity and certain important residues have been defined [ 194]. A high-resolution X-ray structure of ricin... 

The CWC has a wide scope, defining chemical weapons as munitions or other devices, specifically designed to cause death, temporary incapacitation or permanent harm to humans or animals (but not plants). It thereby encompasses past, known and possible chemical warfare agents, including toxins such as ricin and saxitoxin, and refers, in its preamble, to the principles of international law which prohibit the use of herbicides as a method of warfare. It divides these chemicals and many of their precursors into three categories known as schedules. In Schedule 1, it effectively bans 12 groups of chemicals from manufacturing industry and commerce,... 

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