The story broke in September of last year that the FDA was testing nicotine addiction in squirrel monkeys and that four had died as a result of their treatment at the hands of the agency.
The FDA announced that it would suspend the trial, at the time, before finally reaching the decision that it would cancel the experiment altogether.
The testing was instigated to determine how various levels of nicotine in young monkeys could provide clues as to how addiction develops in adolescents and young adults.
