ISSN:
1432-0878
Schlagwort(e):
Sertoli cells
;
Bull
;
Multivesicular nuclear body
;
Nucleolar activity
;
Electron microscopy
Quelle:
Springer Online Journal Archives 1860-2000
Thema:
Biologie
,
Medizin
Notizen:
Summary The ultrastructure of vacuolar formation in the nucleus of the Sertoli cells in normal adult bulls is described. It occurs regularly in all the Sertoli cells instead of the typically arranged nucleolus. It consists of membrane-limited vesicles bearing 150 Å granules on their outer surface and a smaller, fibrillar component composed of coiled filaments 50 Å in diameter. Free and membrane attached ribosomes, and polyribosomes found in the numerous folds of the nuclear membrane indicate RNA synthesis. The possible role of the vacuolar formation, named multivesicular nuclear body, in the ribosomal RNA synthesis is briefly discussed.
Materialart:
Digitale Medien
URL:
http://dx.doi.org/10.1007/BF00315123
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