Nature Conservancy 2001: The Nature Conservancy's eco-regions of the United States.--Available at: http:// sagemap.wr.usgs.gov (Last accessed on 13 July 2011).
In order to identify the tags, the sequences obtained are compared with sequences in different genome databases.[15-19] SAGEmap is a public database of SAGE data, including data presented in this manuscript, and can be accessed at the SAGEmap Web site (http://www.ncbi.nlm.nih.gov/sage).[15,19]