title: Primordial Immunity: Foundations for the Vertebrate Immune System. Proceedings of a conference. Woods Hole, Massachusetts, May 2-5, 1993.
mesh_terms: D000818:Animals; D005075:Biological Evolution; D007109:Immunity / Q000235:genetics; D007448:Invertebrates / Q000276:immunology; D014714:Vertebrates / Q000276:immunology