Kaupp, U. B. Department of Molecular Sensory Systems, Center of Advanced European Studies and Research (caesar), Max Planck Society;
http://www.ncbi.nlm.nih.gov/pubmed/23183693 (全文テキスト(全般))
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC3514733/pdf/JGP_201210902.pdf (全文テキスト(全般))