title: Synthesis of DNA in snail embryos during the early cleavage.
mesh_terms: D000818:Animals; D002455:Cell Division; D002467:Cell Nucleus / Q000378:metabolism; D004247:DNA / Q000096:biosynthesis*; D004625:Embryo, Nonmammalian / Q000378:metabolism*; D005467:Floxuridine; D006918:Hydroxyurea; D012908:Snails / Q000378:metabolism*; D013936:Thymidine / Q000378:metabolism
chemical_list: D005467:Floxuridine; D004247:DNA; D013936:Thymidine; D006918:Hydroxyurea