Nucleoli of cultured human lymphocytes
β Scribed by Ruth Gani
- Book ID
- 104707252
- Publisher
- Springer
- Year
- 1978
- Tongue
- English
- Weight
- 675 KB
- Volume
- 42
- Category
- Article
- ISSN
- 0340-6717
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β¦ Synopsis
Nucleolar fusion and nucleolus formation occurred simultaneously, immediately after mitosis, in cultured human lymphocytes. Evidence is presented that in late telophase and post-telophase, the individual nucleolar organising site includes two components, represented in post-telophase by the nucleolus and its attached process; that fusion can be either directly between the nucleoli or via the processes; and that the latter type of fusion persists into metaphase as acrocentric associations, whilst the former is lost.
π SIMILAR VOLUMES
The activity of argininosuccinate synthetase (E.C. 6.3.4.5), a urea cycle enzyme, was measured in cultured human lymphocytes using a new radioactive assay. Control cells had a maximum specific activity of 15.7 +/- 8.7 nmoles per hour per milligram of protein and an apparent Km for citrulline of 2 X