Results 51 to 60 of about 200,471 (302)

Graph hypersurfaces and a dichotomy in the Grothendieck ring [PDF]

, 2010
The subring of the Grothendieck ring of varieties generated by the graph hypersurfaces of quantum field theory maps to the monoid ring of stable birational equivalence classes of varieties. We show that the image of this map is the copy of Z generated by
D. Abramovich, F. Bittner, J. Kollár, J.R. Stembridge, Matilde Marcolli, P. Aluffi, P. Belkale, Paolo Aluffi, S. Bloch, V.I. Danilov   +9 more
core   +2 more sources

Keratin 19 as a prognostic marker and contributing factor of metastasis and chemoresistance in high‐grade serous ovarian cancer

Molecular Oncology, EarlyView.
Keratin 19 (KRT19) is overexpressed in high‐grade serous ovarian cancer with high levels of Kallikrein‐related peptidases (KLK) 4–7 and is associated with poor survival. In vivo analyses demonstrate that elevated KRT19 increases peritoneal tumour burden.
Sophia Bielesch, Isabel Vogel, Sina Nokodian, Johanna Moeller, Antonia Blechschmidt, Vicky Hecht, Vanessa Kuentzel, Katharina Thiedig, Melissa Schwab, Oliver Schilling, Holger Bronger, Marion Kiechle, Viktor Magdolen, Tobias Dreyer   +13 more
wiley   +1 more source

Quantitative analysis of mechanical force required for cell extrusion in zebrafish embryonic epithelia

Biology Open, 2017
When cells in epithelial sheets are damaged by intrinsic or extrinsic causes, they are eliminated by extrusion from the sheet. Cell extrusion, which is required for maintenance of tissue integrity, is the consequence of contraction of actomyosin rings ...
Sohei Yamada, Takanori Iino, Yasumasa Bessho, Yoichiroh Hosokawa, Takaaki Matsui   +4 more
doaj   +1 more source

Longitudinal circulating tumor DNA profiling in patients with advanced endometrial cancer using an off‐the‐shelf targeted NGS panel

Molecular Oncology, EarlyView.
Intratumour heterogeneity complicates precision management of advanced endometrial cancer. Circulating tumor DNA (ctDNA) offers a minimally invasive strategy to capture tumor evolution and therapeutic resistance. Here, we compare tumor‐agnostic NGS with tumor‐informed ddPCR, outlining their relative sensitivity, concordance, and clinical implications ...
Carlos Casas‐Arozamena, Karin Teien Lande, Eva Diaz, Ana Vilar, Juan Cueva, Efigenia Arias, Victoria Sampayo, Alicia Abalo, Nerea González, Eva Colás, Antonio Gil‐Moreno, Miguel Abal, Gema Moreno‐Bueno, Therese Sørlie, Kristina Lindemann, Laura Muinelo‐Romay   +15 more
wiley   +1 more source

Triggered contraction of self-assembled micron-scale DNA nanotube rings

Nature Communications
Contractile rings are formed from cytoskeletal filaments during cell division. Ring formation is induced by specific crosslinkers, while contraction is typically associated with motor protein activity.
Maja Illig, Kevin Jahnke, Lukas P. Weise, Marlene Scheffold, Ulrike Mersdorf, Hauke Drechsler, Yixin Zhang, Stefan Diez, Jan Kierfeld, Kerstin Göpfrich   +9 more
doaj   +1 more source

Revisiting Mission‐Oriented Cancer Research to tackle the increasing burden of cancer in Europe–a policy perspective

Molecular Oncology, EarlyView.
Translational cancer research and its implementation through competitively selected Comprehensive Cancer Centers across Europe should be the primary policy focus for addressing the increasing cancer burden in Europe and counteract the present main strategy to convert cancer to a chronic disease.
Manuel Heitor, Julio Celis, Ulrik Ringborg   +2 more
wiley   +1 more source

Negative tension of scroll wave filaments and turbulence in three-dimensional excitable media and application in cardiac dynamics [PDF]

, 2012
Scroll waves are vortices that occur in three-dimensional excitable media. Scroll waves have been observed in a variety of systems including cardiac tissue, where they are associated with cardiac arrhythmias.
Alonso, Sergio, Bär, Markus, Panfilov, Alexander   +2 more
core   +2 more sources

Polarization‐resolved femtosecond Vis/IR spectroscopy tailored for resolving weak signals in biological samples using minimal sample volume

FEBS Open Bio, EarlyView.
Unique biological samples, such as site‐specific mutant proteins, are available only in limited quantities. Here, we present a polarization‐resolved transient infrared spectroscopy setup with referencing to improve signal‐to‐noise tailored towards tracing small signals. We provide an overview of characterizing the excitation conditions for polarization‐
Clark Zahn, Karsten Heyne
wiley   +1 more source

Thallium trinitrate mediated ring contraction of cis-2-decalones

Journal of the Brazilian Chemical Society, 2001
The reaction of some cis-2-decalones with TTN in CH2Cl2 at room temperature was investigated. The ring contraction reactions occurred in good yields, however the regio- and diastereoselectivity were low.
Ferraz Helena M. C., Silva Jr. Luiz F.
doaj  

Closed Abrikosov Vortices in a Superconducting Cylinder

, 1993
The new type of solutions of the London equation for type-II superconductors is obtained to describe the ring-shaped (toroidal) Abrikosov vortices. The specific feature of these solutions is the self-consistent localization of both the supercurrent and ...
A.V. Samokhvalov, Abrikosov, Abrikosov, Andreev, Andreev, Campbell, Gorter, Gorter, Huebener, Ivlev, Koppe, Landau, Saint-James, Shmidt, Ullmaier, V.A. Kozlov   +15 more
core   +2 more sources