Visualization of cell polarity during Xenopus gastrulation Shindo, A. 1, Takagi, C. 1, Kiyosue, Y. 2, and Ueno, N. 1 (First names can be spelled-out) 1 National Institute for Basic Biology, Okazaki, Japan 2 KAN Research Institute, Kyoto, Japan nueno@nibb.ac.jp [Text]