title: [Description, cytochemistry, and electron microscopic autoradiography of nucleolar granular spheres and micronucleoli of lizard (Lacerta vivipara Jacquin) pyriform cells].
abstract: The granular spheres are constituted of granules of 300-350 A and show a higher contrast than the nucleolar part where they are localised. The micronucleoli consist of fine fibrils. These two structures contain RNP. A relation between the granular spheres and the degeneration of the pyriform cells is suggested. The RNP of the micronucleoli, probably synthesized on perinucleolar DNA, migrate into cytoplasm.
mesh_terms: D000818:Animals; D002466:Cell Nucleolus / Q000032:analysis / Q000648:ultrastructure; D005260:Female; D008116:Lizards / Q000033:anatomy & histology*; D009698:Nucleoproteins / Q000032:analysis; D010053:Ovary / Q000648:ultrastructure*; D012313:RNA / Q000032:analysis; D013799:Theca Cells / Q000032:analysis / Q000648:ultrastructure*
chemical_list: D009698:Nucleoproteins; D012313:RNA
vernacular_title: Etude descriptive, cytochimique et autoradiographique en microscopie électronique sur les sphères granulaires nucléolaires et les micronucléoles des cellules piriformes chez le Lézard: Lacerta vivipara Jacquin