The Nobel Assembly at the Karolinska Institute is a body at Karolinska Institute which awards the Nobel Prize in Physiology or Medicine. It is headquartered in the Nobel Forum on the grounds of the Karolinska Institute campus. Originally the Nobel Assembly was not a formal body but rather the collective of all professors (holders of chairs, i.e. full professors) at Karolinska Institute. In 1977 the Nobel Assembly became a separate private organization hosted by Karolinska Institute. Until 1984 all Karolinska Institute professors belonged to the Assembly; from 1984 the membership is restricted to 50 Karolinska Institute professors.