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Originally published April 17, 2013 at 6:17 PM | Page modified April 18, 2013 at 6:09 AM

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Deadly ricin easy to get, experts say

The deadly poison ricin is part of the waste produced by making castor oil, so it’s easy to get.

Bloomberg News

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Ricin is readily available, may be deadly in tiny amounts if properly prepared and can kill in 72 hours.

While it’s not easy to convert the substance into a usable poison, its attraction is its availability, said Jim Romagnoli, the vice president of emergency management at the North Shore- LIJ Health System in Great Neck, N.Y.

“This is a tricky thing for an amateur, although amateurs have done this with small amounts in the past,” Romagnoli said. Ricin is found in castor beans, he said, and is part of the waste produced by making castor oil, so it’s “easily available.”

If the poison is partially purified or refined, it can be used in air, food or water, according to the Centers for Disease Control and Prevention. It works by preventing a person’s cells from making necessary proteins, thereby killing the cells.

“You must inhale or ingest it,” for the ricin to be poisonous, Romagnoli said. “You don’t get sick just from touching it.”

To process ricin from mash, it must first be dried into a powder.

The lethal dose depends on how the ricin is processed and how people are exposed to it.

Inhaled or injected doses of as little as 3 to 5 micrograms per kilogram of body weight may be lethal, according to a December 2010 report from the Congressional Research Service. That translates into as little as 240 micrograms to 400 micrograms for a 175-pound person.

In 1978, a tiny pellet of ricin was used to assassinate Georgi Markov, a Bulgarian dissident, in London when it was injected into his skin using the tip of an umbrella.

Initial symptoms of poison from inhalation occur as early as four to six hours after the exposure, and include difficulty breathing and a cough. The symptoms progress rapidly to fluid within the lungs and respiratory failure. Deaths from the poison usually happen within 36 to 72 hours, according to the Congressional Research Service report.

While no antidote exists, doctors can counteract the effects of the poisoning by helping victims breathe or giving them fluids.

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