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
Queen Victoria Street, London Queen Victoria Street, London Queen Victoria Street, named after the British monarch who reigned from 1837 to 1901, is a street in London which runs east by north from its junction with New Bridge Street and Victoria Embankment in the Castle Baynard ward of the City of London, along a section that divides the wards of Queenhithe and Bread Street, then lastly through the middle of Cordwainer ward, until it reaches Mansion House Street at Bank junction. Beyond Bank junction, the street continues north-east as Threadneedle Street which joins Bishopsgate. Other streets linked to Queen Victoria Street include Puddle Dock,