title: Phylogeny of lower vertebrates and their immunological structures.
authors.affiliation: Department of Cell Biology, Faculty of Biology, Complutense University, Madrid, Spain.
authors.forename: A
authors.initials: A
authors.lastname: Zapata
authors.forename: C T
authors.initials: CT
authors.lastname: Amemiya
mesh_terms: D000818:Animals; D005399:Fishes / Q000145:classification / Q000235:genetics / Q000276:immunology; D008221:Lymphoid Tissue / Q000033:anatomy & histology / Q000276:immunology; D010802:Phylogeny; D014714:Vertebrates / Q000145:classification / Q000235:genetics / Q000276:immunology*