Skip to main page content
U.S. flag

An official website of the United States government

Dot gov

The .gov means it’s official.
Federal government websites often end in .gov or .mil. Before sharing sensitive information, make sure you’re on a federal government site.

Https

The site is secure.
The https:// ensures that you are connecting to the official website and that any information you provide is encrypted and transmitted securely.

Access keys NCBI Homepage MyNCBI Homepage Main Content Main Navigation
Comment
. 2000 Jun 20;97(13):6924-6.
doi: 10.1073/pnas.97.13.6924.

50 million years of chordate evolution: seeking the origins of adaptive immunity

Affiliations
Comment

50 million years of chordate evolution: seeking the origins of adaptive immunity

D J Laird et al. Proc Natl Acad Sci U S A. .
No abstract available

PubMed Disclaimer

Figures

Figure 1
Figure 1
Dendrogram showing evolutionary relationships between selected animal phyla and classes according to the current model (http://phylogeny.arizona.edu/tree/phylogeny.html). Speculative origin times of adaptive immune structures are indicated, as are documented histocompatibility systems. Divergence times are not to scale unless indicated.

Comment on

  • Do lampreys have lymphocytes? The Spi evidence.
    Shintani S, Terzic J, Sato A, Saraga-Babic M, O'hUigin C, Tichy H, Klein J. Shintani S, et al. Proc Natl Acad Sci U S A. 2000 Jun 20;97(13):7417-22. doi: 10.1073/pnas.110505597. Proc Natl Acad Sci U S A. 2000. PMID: 10840049 Free PMC article.

Similar articles

Cited by

References

    1. Klein J. Immunology. Boston.: Blackwell Scientific; 1990.
    1. Magor B G, De Tomaso A, Rinkevich B, Weissman I L. Immunol Rev. 1999;167:69–79. - PubMed
    1. Schluter S F, Bernstein R M, Bernstein H, Marchalonis J J. Dev Comp Immunol. 1999;23:107–111. - PubMed
    1. Shintani S, Terzic J, Sato A, Saraga-Babic M, O'hUigin C, Tichy H, Klein J. Proc Natl Acad Sci USA. 2000;97:7417–7422. - PMC - PubMed
    1. Oettinger M A, Schatz D G, Gorka C, Baltimore D. Science. 1990;248:1517–1522. - PubMed

LinkOut - more resources