title: Source of precursors for nucleotide biosynthesis in Bufo arenarum segmenting eggs.
mesh_terms: D000818:Animals; D002022:Bufo arenarum / Q000196:embryology*; D004625:Embryo, Nonmammalian / Q000378:metabolism*; D005260:Female; D005650:Fumarates / Q000378:metabolism; D005971:Glutamates / Q000378:metabolism; D008293:Malates / Q000378:metabolism; D009711:Nucleotides / Q000096:biosynthesis*; D009865:Oocytes / Q000378:metabolism*; D010063:Ovum / Q000378:metabolism*
chemical_list: D005650:Fumarates; D005971:Glutamates; D008293:Malates; D009711:Nucleotides