Refine
Year of publication
Document Type
- Conference Proceeding (108) (remove)
Language
- English (108) (remove)
Keywords
- Schwertkärpfling (7)
- Immunbiologie (5)
- Psychologie (5)
- PET (4)
- Toxikologie (4)
- Virtuelle Realität (4)
- positron emission tomography (4)
- Begabung (3)
- HIV (3)
- Interkulturelles Lernen (3)
Institute
- Theodor-Boveri-Institut für Biowissenschaften (24)
- Institut für Psychologie (bis Sept. 2007) (13)
- Klinik und Poliklinik für Allgemein-, Viszeral-, Gefäß- und Kinderchirurgie (Chirurgische Klinik I) (11)
- Institut für Informatik (9)
- Institut für Mineralogie und Kristallstrukturlehre (8)
- Klinik und Poliklinik für Nuklearmedizin (8)
- Institut für Pharmakologie und Toxikologie (6)
- Institut Mensch - Computer - Medien (4)
- Institut für Psychologie (4)
- Physikalisches Institut (4)
Schriftenreihe
Sonstige beteiligte Institutionen
- Johns Hopkins School of Medicine, Baltimore, MD, U.S. (4)
- Cologne Game Lab (3)
- Johns Hopkins School of Medicine (3)
- Open University of the Netherlands (2)
- Birmingham City University (1)
- Brown University (1)
- DATE Lab, KITE Research Insititute, University Health Network, Toronto, Canada (1)
- Hospital Augsburg, Augsburg, Germany (1)
- Johns Hopkins University School of Medicine, Baltimore, MD, U.S. (1)
- Social and Technological Systems (SaTS) lab, School of Art, Media, Performance and Design, York University, Toronto, Canada (1)
EU-Project number / Contract (GA) number
- 701983 (8)
The structural organization of transcriptionally active DNA that contains cistrons for precursor molecules of ribosomal RNA is described in positively stained spread preparations from nuclei and nucleoli isolated from the green alga, Acetabularia mediterranea Lmx. These nuclei contain large aggregates of nucleolar subunits in which fibril-covered regions, the putative active cistrons for precursors of ribosomal RNA, alternate with fibril-free intercepts, the "spacers". The length distribution of the different intercepts of this DNA is given, and the pattern is compared with those shown in animal cell systems. The data are discussed in relation to problems of transcription and of amplification of ribosomal RNA genes.