Ricin chain A. This vaccination is effective for several months due to the body's production of antibodies to the foreign protein. In 1978 Bulgarian defector Vladimir Kostov survived a ricin attack similar to the one on Georgi Markov, probably due to his body's production of antibodies. When a ricin-laced pellet was removed from the small of his back it was found that some of the original wax coating was still attached. For this reason only small amounts of ricin had leaked out of the pellet, producing some symptoms but allowing his body to develop immunity to further poisoning. The seeds of
Wood Green ricin plot There was no UK poison cell linked to al Qaida or Muhamad al Zarqawi. There was no ricin with which to poison London, only notes and 22 castor seeds . There was no one who even knew how to purify ricin. On 17 August 2006, Craig Murray summed up on "CounterPunch": I spoke at the annual Stop the War conference a couple of months ago [and] referred to the famous ricin plot... It was alleged that a flat in North London inhabited by Muslims was a "Ricin" factory, manufacturing the deadly toxin which could kill "hundreds of thousands of people".