The three letter codes for each of the 17 divisions of GenBank
PRI primate
ROD rodent
MAM other
mammalian
VRT other vertebrate
INV invertebrate
PLN plant,
fungal, algal
BCT bacteria
RNA structural
RNA
VRL viral
PHG bacteriophage
SYN synthetic
UNA unannotated
PAT patent
EST expressed sequence tags
STS sequence tagged sites
GSS genome survey sequences
HTG high throughput genome sequences