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The NCBI Entrez Taxonomy Homepage


The NCBI taxonomy database contains the names of all organisms that are represented in the genetic databases with at least one nucleotide or protein sequence. Click on the tree if you want to browse the taxonomic structure or retrieve sequence data for a particular group of organisms.


These are direct links to some of the organisms commonly used in molecular research projects:

Arabidopsis thaliana Hepatitis C virus Pneumocystis carinii
Bos taurus Homo sapiens Rattus norvegicus
Caenorhabditis elegans Magnaporthe grisea Saccharomyces cerevisiae
Chlamydomonas reinhardtii Mus musculus Schizosaccharomyces pombe
Danio rerio (zebrafish) Mycoplasma pneumoniae Takifugu rubripes
Dictyostelium discoideum Neurospora crassa Xenopus laevis
Drosophila melanogaster Oryza sativa Zea mays
Escherichia coli Plasmodium falciparum

Comments and questions to info@ncbi.nlm.nih.gov
Credits: Joe Bischoff, Mikhail Domrachev, Scott Federhen, Carol Hotton, Detlef Leipe, Vladimir Soussov, Richard Sternberg, Sean Turner.