title: Timing of nucleolar activity in meristems.
mesh_terms: D002466:Cell Nucleolus; D002875:Chromosomes; D004247:DNA / Q000096:biosynthesis; D005796:Genes; D008938:Mitosis; D063245:Plant Development; D012335:RNA, Ribosomal; D013997:Time Factors; D003313:Zea mays
chemical_list: D012335:RNA, Ribosomal; D004247:DNA