Results 81 to 90 of about 87,414 (290)

The nucleolus: a raft adrift in the nuclear sea or the keystone in nuclear structure?

open access: yesBiomolecular Concepts, 2013
The nucleolus is a prominent nuclear structure that is the site of ribosomal RNA (rRNA) transcription, and hence ribosome biogenesis. Cellular demand for ribosomes, and hence rRNA, is tightly linked to cell growth and the rRNA makes up the majority of ...
O’Sullivan Justin M.   +4 more
doaj   +1 more source

Telomeres cluster de novo before the initiation of synapsis: a three-dimensional spatial analysis of telomere positions before and during meiotic prophase. [PDF]

open access: yes, 1997
We have analyzed the progressive changes in the spatial distribution of telomeres during meiosis using three-dimensional, high resolution fluorescence microscopy.
Agard, DA   +4 more
core  

Nucleolar origins: challenging perspectives on evolution and function

open access: yesOpen Biology
The nucleolus, once considered a mere ‘ribosome factory’, is now recognized as a dynamic hub influencing nearly every aspect of cellular life, from genome organization to stress response and ageing.
Israel Muñoz-Velasco   +2 more
doaj   +1 more source

Measuring voting power in convex policy spaces [PDF]

open access: yes, 2013
Classical power index analysis considers the individual's ability to influence the aggregated group decision by changing its own vote, where all decisions and votes are assumed to be binary. In many practical applications we have more options than either
Kurz, Sascha
core   +6 more sources

Localisation of the Ki-67 antigen within the nucleolus: Evidence for a fibrillarin-deficient region of the dense fibrillar component [PDF]

open access: yes, 1996
The Ki-67 antigen is detected in proliferating cells in all phases of the cell division cycle. Throughout most of interphase, the Ki-67 antigen is localised within the nucleolus.
Kill, IR
core  

Nucleolar Localization of HIV-1 Rev Is Required, Yet Insufficient for Production of Infectious Viral Particles. [PDF]

open access: yes, 2018
Combination antiretroviral therapy fails in complete suppression of HIV-1 due to drug resistance and persistent latency. Novel therapeutic intervention requires knowledge of intracellular pathways responsible for viral replication, specifically those ...
Arizala, Jerlisa Ann C   +5 more
core   +1 more source

Gonadal development in scorpion mud‐turtles, Kinosternon scorpioides, in a controlled environment

open access: yesThe Anatomical Record, EarlyView.
Stage 20 was identified as the critical point for gonadal differentiation in Kinosternon scorpioides, providing key insights into sex determination. These findings enhance conservation strategies by supporting reproductive management and population viability in both in situ and ex situ programs. Abstract Research on gonadal development including sexual
Brenda Braga   +4 more
wiley   +1 more source

1-concave basis for TU games [PDF]

open access: yes, 2005
The first stage of research, twenty years ago, on the subclass of 1-convex TU games dealt with its characterization through some regular core structure. Appealing abstract and practical examples of 1-convex games were missing until now.
Driessen, T.S.H.   +2 more
core   +1 more source

Effect of Urtica dioica L extract on quantitative morphometric alterations of liver parenchymal cells in STZ diabetic rats [PDF]

open access: yes, 2009
Diabetes is associated with several structural and functional liver abnormalities that affect glycogen and lipid metabolism. In this study, an attempt was made to evaluate the effects of hydroalcoholic extract of Urtica dioica leaves on Quantitative ...
Farsi, M.M.   +2 more
core   +1 more source

Nucleolus: the ribosome factory.

open access: yesHistology and histopathology, 2008
The nucleolus is a nuclear compartment and represents the most obvious and clearly differentiated nuclear structure seen in the microscope. Within nucleoli most events of ribosome biogenesis, such as ribosomal RNA synthesis, processing, and ribosome subunit assembly, take place.
Cmarko, Dusan   +3 more
openaire   +3 more sources

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