A South Korean supporter of stem-cell scientist Hwang Woo-suk, who was a professor at Seoul National University, puts a sticker on a hat of colleague during a rally in Seoul January 11, 2006. Supporters insisted that the university give Hwang an opportunity to reproduce his work. The president of the university apologised on Wednesday for scientific fraud at the school, saying two fabricated papers on stem cell research had embarrassed the country and science. The sticker reads "We love and trust doctor Hwang". REUTERS/Lee Jae-Won