We found a matchYour institution may have access to this item. Find your institution then sign in to continue.TitleEvolution of Key Cell Signaling and Adhesion Protein Families Predates Animal Origins.AuthorsKing, Nicole; Hittinger, Christopher T.; Carroll, Sean B.PublicationScience, 2003, Vol 301, Issue 5631, p361ISSN0036-8075Publication typearticleDOI10.1126/science.1083853