title: Two become one.
authors.forename: H
authors.initials: H
authors.lastname: Pearson
mesh_terms: D000818:Animals; D002468:Cell Physiological Phenomena; D002630:Chemotactic Factors / Q000502:physiology; D015509:Developmental Biology / Q000639:trends*; D011506:Proteins / Q000502:physiology
chemical_list: D002630:Chemotactic Factors; D011506:Proteins