Wessel, G M Sequential expression of germ-layer specific molecules in the sea urchin embryo. [electronic resource] - Developmental biology Oct 1985 - 451-63 p. digital Publication Type: Journal Article; Research Support, U.S. Gov't, P.H.S. ISSN: 0012-1606 Standard No.: 10.1016/0012-1606(85)90497-x doi Subjects--Topical Terms: AnimalsEndoderm--metabolismEpitopes--biosynthesisFluorescent Antibody TechniqueMesoderm--metabolismMicroscopy, ElectronSea Urchins--embryology