More than 1,000 people staged mostly peaceful protests during the talks , proclaiming that genetically modified foods weren 't the answer to the world 's food problems .
More than 1,000 people rallied over three days , proclaiming that genetically modified foods weren 't the answer to the world 's food problems .
Axcan 's shares closed down 63 Canadian cents , or 4 percent , at C $ 16.93 in Toronto on Tuesday .