ESTs (Expressed Sequence Tags) 情報 　Genbank, ESTs: http://www.ncbi.nlm.nih.gov/dbEST/dbEST_summary.html 　Washington University: 　National BioResorce Project: http://shigen.lab.nig.ac.jp/xenopus/top.jsp 　XDB3: http://xenopus.nibb.ac.jp/ 　XEXTDB: http://xextdb.nibb.ac.jp/