Authors: Jörg H Fritz; Olga Lucia Rojas; Nathalie Simard; Douglas D McCarthy; Siegfried Hapfelmeier; Stephen Rubino; Susan J Robertson; Mani Larijani; Jean Gosselin; Ivaylo I Ivanov; Alberto Martin; Rafael Casellas; Dana J Philpott; Stephen E Girardin; Kathy D McCoy; Andrew J Macpherson; Christopher J Paige; Jennifer L Gommerman Journal: Nature Date: 2011-12-11 Impact factor: 49.962