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
1978 London bus attack 1978 London bus attack On 20 August 1978, a staff bus of El Al airlines in London was attacked by Palestinian terrorists. A flight attendant and one terrorist were killed in the attack, and nine people were wounded. At around 13:30, a minibus with staff of the El Al airlines was attacked during a stopover at the Europa Hotel in Grosvenor Square, Mayfair, central London, when two or three men opened fire with submachine guns and hand grenades. An El Al flight attendant was killed in the attack, while members of a wedding party were among those wounded by gun