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
Umbrella applied to such use. According to Gorius, the umbrella came to Rome from the Etruscans who came to Rome for protection, and certainly it appears not infrequently on Etruscan vases and pottery, as also on later gems and rubies. One gem, figured by Pacudius, shows an umbrella with a bent handle, sloping backwards. Strabo describes a sort of screen or umbrella worn by Spanish women, but this is not like a modern umbrella. The Sanskrit epic Mahabharata (about 4th century BC) relates the following legend: Jamadagni was a skilled bow shooter, and his devoted wife Renuka would always recover each