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
1884 attack on London Bridge The three men had already been under surveillance by the police in America and in Britain. 1884 attack on London Bridge On 13 December 1884, three American-Irish Republicans carried out a dynamite attack on London Bridge as part of the Fenian dynamite campaign. The bomb went off prematurely while the three men were in a boat attaching it to a bridge pier at 5.45 pm during the evening rush hour. There was little damage to the bridge, and no casualties other than the bombers. The men's boat was so completely destroyed the police initially thought the bombers had fled. "The