primate OR pseudogene links
links to the correction/retraction of the Gilad et al. paper on primate olfactory receptors:
http://www.plosbiology.org/article/info%3Adoi%2F10.1371%2Fjournal.pbio.0050148
Matsui et al. paper looking at genome-wide ORs:
http://mbe.oxfordjournals.org/content/27/5/1192.short