title: Nucleoli of cultured human lymphocytes. II. Nuceolar fusion and its relation to acrocentric association.
abstract: Nucleolar fusion and nucleolus formation occurred simultaneously, immediately after mitosis, in cultured human lymphocytes. Evidence is presented that in late telophase and post-telophase, the individual nucleolar organising site includes two components, represented in post-telophase by the nucleolus and its attached process; that fusion can be either directly between the nucleoli or via the processes; and that the latter type of fusion persists into metaphase as acrocentric associations, whilst the former is lost.
mesh_terms: D002453:Cell Cycle; D002466:Cell Nucleolus; D002877:Chromosomes, Human; D004261:DNA Replication; D005796:Genes; D006801:Humans; D008214:Lymphocytes / Q000166:cytology / Q000648:ultrastructure