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 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 than the one used for the series, making him five feet tall, or higher,