title: Identification of a presumptive morphogenetic determinant from the amphibian oocyte germinal vesicle nucleus.
mesh_terms: D000818:Animals; D001681:Biological Assay; D002467:Cell Nucleus / Q000032:analysis*; D004625:Embryo, Nonmammalian / Q000187:drug effects; D005260:Female; D009024:Morphogenesis; D010063:Ovum / Q000032:analysis / Q000166:cytology*; D011894:Rana pipiens / Q000196:embryology*; D014020:Tissue Extracts / Q000032:analysis / Q000302:isolation & purification* / Q000494:pharmacology
chemical_list: D014020:Tissue Extracts