Kellner, R.., Baier, J., Willig, K., Hell, S. W., & Barrantes, F. J. (2007). Nanoscale organization of nicotinic acetylcholine receptors revealed by stimulated emission depletion microscopy. Neuroscience, 144(1), 135-143. Retrieved from http://www.sciencedirect.com/science?_ob=MImg&_imagekey=B6T0F-4M4CNB8-4-M&_cdi=4861&_user=38661&_orig=search&_coverDate=01%2F05%2F2007&_sk=998559998&view=c&wchp=dGLbVlb-zSkWz&md5=5f713d1f0ceb17db0fea0256d34dd460&ie=/sdarticle.pdf.