title: Construction of a cloned library of expressed embryonic gene sequences from Xenopus laevis.
mesh_terms: D000818:Animals; D003001:Cloning, Molecular / Q000379:methods; D004274:DNA, Recombinant; D005775:Gastrula / Q000502:physiology; D009693:Nucleic Acid Hybridization; D014981:Xenopus / Q000196:embryology / Q000235:genetics*
chemical_list: D004274:DNA, Recombinant