The Rice Annotation Project Database (RAP-DB): hub for Oryza sativa ssp. japonica genome information. - Ohyanagi H; Tanaka T; Sakai H; Shigemoto Y; Yamaguchi K; Habara T; Fujii Y; Antonio BA; Nagamura Y; Imanishi T; Ikeo K; Itoh T; et al. (Nucleic acids research, 2006)