1. Molecular phylogeny and divergence times of deuterostome animals;Blair;Mol. Biol. Evol.,2005
2. Immune response in the sea urchin Lytechinus pictus;Coffaro;Science,1977
3. The echinoderms;Smith,1981
4. Echinoderm coelomocytes;Chia;Zool. Stud.,1996
5. Sea urchin genes expressed in activated coelomocytes are identified by expressed sequence tags. Complement homologues and other putative immune response genes suggest immune system homology within the deuterostomes;Smith;J. Immunol.,1996