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
A Special Sesame Street Christmas losing to "Christmas Eve on Sesame Street". Both specials are now available on DVD. A Special Sesame Street Christmas A Special Sesame Street Christmas is a 1978 CBS Christmas special, made the same year as the better-known "Christmas Eve on Sesame Street". The special was first broadcast on Friday, December 8, 1978, at 8 PM ET on CBS, pre-empting "Wonder Woman" that week. Starring Leslie Uggams. The special features only three of the "Sesame Street" Muppets: Oscar the Grouch, Big Bird, and Barkley the dog. Barkley is played by gymnast Toby Towson. The puppet used for the special was different