MachiBase: a Drosophila melanogaster 5'-end mRNA transcription database. - Budrul Ahsan; Taro L. Saito; Shin-ichi Hashimoto; Keigo Muramatsu; Manabu Tsuda; Atsushi Sasaki; Kouji Matsushima; Toshiro Aigaki; Shinichi Morishita (Nucleic Acids Res., 2009)