The entries can also be grouped according to their organismal affiliation. To give you an example of how this data is distributed by organism consider the data in Table 2.1 .
Several groups require further explanation.
The Synthetic group contains things such as plasmids, Yacs, etc that have been constructed by researchers. That is messenger RNA is reverse transcribed to cDNA, and the cDNA is partially sequenced from the the poly-A addition site. The HTG stands for h igh t hroughput g enomic sequences. These are contig sequences greater than 2kb that have not yet been fully released from large scale sequencing laboratories. The sequences will normally be checked, assembled and annotated by these groups before official release.