The Swiss voted on Sunday to support a government proposal to allow embryonic stem cell research, which will mean the of thousands of lives.

According to the results of a national referendum on Sunday, two thirds of voters said “yes” to the controversial proposal that would allow studies with embryonic stem cells that are less than seven days old and are discarded at a fertility treatment centers.

The vote made Switzerland the first country in the world to submit the issue to a vote.

Until Sunday, experiments with human embryos had been prohibited in the country.