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
Gower Street, London December 1904 a London County Council blue plaque was put up, to "Charles Darwin Naturalist". The house suffered from bomb damage in 1941 during the Blitz, and was not repaired. In 1961 the site became part of the Biological Sciences building of University College London, with a new plaque. The long thin garden which backed on to Gower Mews North (later Malet Place) was incorporated into Foster Court car park in 1978. The etymologist and philologist Hensleigh Wedgwood, who was Charles Darwin's cousin and brother-in-law, lived at 94 Gower Street; he died there in 1891. On the wall of the