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
London Bridge station by Network Rail. It has a ticket hall and entrance area with its main frontage on Tooley Street, and other entrances on Borough High Street and within the main line station concourse. It is one of two mainline London termini south of the River Thames, the other is Waterloo. The Underground station is on the Jubilee line and the Bank branch of the Northern line. Several London Buses routes, including 43 and RV1, pass the station; some via the bus station. River buses use the nearby London Bridge City Pier. London Bridge station was opened on 14 December 1836, making