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
On with the Dance On with the Dance "On with the Dance" is the first episode of the fifth and final series of the period drama "Upstairs, Downstairs". It first aired on 7 September 1975 on ITV. "On with the Dance" was recorded in the studio on 9 and 10 January 1975, with a retake filmed on the morning of 7 April. It is the first episode to feature Anne Yarker and Jonathan Seeley as Virginia's children, Alice and William, and Karen Dotrice as Lily Hawkins. The events between the end of series 4 and this episode are covered in a bridge story. "On