[Preliminary data on "fibrillary centers" of the nucleolus of various cells of the ovarian follicle of a lizard Lacerta muralis Laur].
The nucleolus of the thecal cells and little cells of the granulosa contains generally a single "fibrillar center" surrounded by the dense fibrous material of the nucleolus. The "fibrillar centers" are in contact with nucleolar associated heterochromatin. Cytochemical results show that "fibrillar centers" are chiefly composed of proteins which are revealed as ribonucleoproteins with the EDTA method, but the amount of RNA associated with these proteins seems to be small. It is possible that the fibrillar center also contains a little DNA.
D000818:Animals; D002466:Cell Nucleolus / Q000648:ultrastructure*; D004247:DNA / Q000032:analysis; D004492:Edetic Acid; D005260:Female; D006651:Histocytochemistry; D008116:Lizards / Q000166:cytology*; D010053:Ovary / Q000648:ultrastructure*; D010434:Pepsin A; D011402:Pronase; D012313:RNA / Q000032:analysis; D012260:Ribonucleases; D012261:Ribonucleoproteins / Q000032:analysis
D012261:Ribonucleoproteins; D012313:RNA; D004247:DNA; D004492:Edetic Acid; D012260:Ribonucleases; D010434:Pepsin A; D011402:Pronase
Données préliminaires sur les "centres fibrillaires" du nucléole de certaines cellules du follicule ovarien d'un lézard: Lacerta muralis Laur