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
Waterloo Bridge (1940 film) in New York and shortly after in London to positive reviews. "It owed much to the dialogue of Robert E. Sherwood's original play, and to good, shrewd screen directing." The film is recognized by American Film Institute in these lists: According to MGM records the film earned $1,250,000 in the US and Canada and $1,217,000 elsewhere resulting in a profit of $491,000. "Waterloo Bridge" was dramatized as a half-hour radio play on two broadcasts of "The Screen Guild Theater", the first on January 12, 1941 with Brian Aherne and Joan Fontaine and the second on September 9, 1946 with Barbara