Silver-stained cells from 49 parents with a history of several abortions were compared with cells from 35 parents with normal liveborn children. The modal and mean number of silver-stained NORs (Ag-NORs) observed on D- or G-group chromosomes was similar in both groups and between males and females.
Behavior of nucleolar organizer regions of chromosomes in polykaryocytes consisting of micronuclei
β Scribed by V. I. Stobetskii; L. L. Mironva
- Publisher
- Springer US
- Year
- 1987
- Tongue
- English
- Weight
- 587 KB
- Volume
- 103
- Category
- Article
- ISSN
- 0007-4888
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In the two Drosophila races D. n. nasuta and D. n. albomicans the nucleolar-organizer regions (NORs) have been localized on metaphase chromosomes by a combined acid treatment and silver-staining technique. In both Drosophila races one NOR is present on the heterochromatic Y chromosomes and another
A reliable technique for staining human chromosomal nucleolar organizers (NOR's) with silver solutions is described. The NOR's can be selectively stained dark brown by silver solutions leaving the chromosome arms unstained and available for counterstaining with orcein or Giemsa dyes. Unequivocal ide
Background. Nucleolar organizer regions (NORs) are loops of ribosomal DNA that occur in nucleoli and that transcribe to ribosomal RNA. NORs have been identified by means of the Ag-NOR technique in routinely processed tissues, and were found to be of discriminative value between some types of benign