Kazunori Takahashi, Akihiro Hattori, Ikurou Suzuki, Takanori Ichiki and Kenji Yasuda*
* Corresponding author: Kenji Yasuda cyasuda@mail.ecc.u-tokyo.ac.jp
Journal of Nanobiotechnology 2004, 2:5 doi:10.1186/1477-3155-2-5