ISSN:
1615-6102
Keywords:
Silver staining
;
Nucleolus
;
Quantitative analysis
;
Pineal gland
;
Rat
;
Oestrous cycle
Source:
Springer Online Journal Archives 1860-2000
Topics:
Biology
Notes:
Summary Morphology, distribution and number of different argyrophilic aggregates appearing in pinealocyte nuclei have been studied during the rat oestrous cycle. Using the Ag-NOR reaction we have found two types of argyrophilic aggregates in pinealocyte nuclei. One of them, corresponding to the fibrillar centres and the surrounding fibrillar component, appears in the nucleoli. The silver grains are more loosely packed in the dense fibrillar component than in the fibrillar centres. A decrease in the number of these nucleolar argyrophilic aggregates was obtained at oestrous. A second type of silver grain aggregate was observed in the pinealocyte nucleoplasm. We call them “Ag-granule clusters” because they are similar to the interchromatin granule clusters and constitute the only silver deposit forming aggregates apart from the nucleolus. The number of Ag-granule clusters is significantly smaller at oestrous and meta-oestrous than at dioestrous and pro-oestrous.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/BF01281020
Permalink
