Ricin immunogenic in mice, rabbits, and humans. It has completed two successful clinical trials. Ricin has been involved in a number of incidents. In 1978, the Bulgarian dissident Georgi Markov was assassinated by Bulgarian secret police who surreptitiously shot him on a London street with a modified umbrella using compressed gas to fire a tiny pellet contaminated with ricin into his leg. He died in a hospital a few days later and his body was passed to a special poison branch of the British Ministry of Defence (MOD) that discovered the pellet during an autopsy. The prime suspects were the Bulgarian
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