title: The possible contribution of electron microscopy to the understanding of the mechanism of non-disjunction in man.
mesh_terms: D002843:Chromatin / Q000648:ultrastructure; D002869:Chromosome Aberrations; D002877:Chromosomes, Human / Q000648:ultrastructure*; D006801:Humans; D008540:Meiosis; D008854:Microscopy, Electron / Q000379:methods
chemical_list: D002843:Chromatin