Results 31 to 40 of about 18,304 (274)

Androgen and estrogen receptor expression in the developing human penis and clitoris. [PDF]

open access: yes, 2020
To better understand how the human fetal penis and clitoris grows and remodels, we undertook an investigation to define active areas of cellular proliferation and programmed cell death spatially and temporally during development of human fetal external ...
Baskin, Laurence   +6 more
core  

Dark-field hyperlens: Super-resolution imaging of weakly scattering objects [PDF]

open access: yes, 2015
We propose and numerically demonstrate a technique for subwavelength imaging based on a metal-dielectric multilayer hyperlens designed in such a way that only the large-wavevector waves are transmitted while all propagating waves from the image area are ...
Lavrinenko, Andrei V.   +2 more
core   +3 more sources

Embryonic geometry underlies phenotypic variation in decanalized conditions

open access: yeseLife, 2020
During development, many mutations cause increased variation in phenotypic outcomes, a phenomenon termed decanalization. Phenotypic discordance is often observed in the absence of genetic and environmental variations, but the mechanisms underlying such ...
Anqi Huang   +2 more
doaj   +1 more source

Sub-wavelength diffraction-free imaging with low-loss metal-dielectric multilayers [PDF]

open access: yes, 2010
We demonstrate numerically the diffraction-free propagation of sub-wavelength sized optical beams through simple elements built of metal-dielectric multilayers.
A. Farjadpour   +18 more
core   +2 more sources

Emergence of tissue polarization from synergy of intracellular and extracellular auxin signaling

open access: yesMolecular Systems Biology, 2010
Plant development is exceptionally flexible as manifested by its potential for organogenesis and regeneration, which are processes involving rearrangements of tissue polarities.
Krzysztof Wabnik   +8 more
doaj   +1 more source

Mouse Skull Mean Shape and Shape Robustness Rely on Different Genetic Architectures and Different Loci

open access: yesFrontiers in Genetics, 2019
The genetic architecture of skull shape has been extensively studied in mice and the results suggest a highly polygenic and additive basis. In contrast few studies have explored the genetic basis of the skull variability.
Ceferino Varón-González   +5 more
doaj   +1 more source

Associations between leaf developmental stability, variability, canalization, and phenotypic plasticity in Abutilon theophrasti

open access: yesEcology and Evolution, 2022
Developmental stability, canalization, and phenotypic plasticity are the most common sources of phenotypic variation, yet comparative studies investigating the relationships between these sources, specifically in plants, are lacking.
Shu Wang, Dao‐Wei Zhou
doaj   +1 more source

Complex epithelial remodeling underlie the fusion event in early fetal development of the human penile urethra. [PDF]

open access: yes, 2016
We recently described a two-step process of urethral plate canalization and urethral fold fusion to form the human penile urethra. Canalization ("opening zipper") opens the solid urethral plate into a groove, and fusion ("closing zipper") closes the ...
Baskin, Laurence   +6 more
core  

Symmetry in Critical Random Boolean Network Dynamics

open access: yes, 2014
Using Boolean networks as prototypical examples, the role of symmetry in the dynamics of heterogeneous complex systems is explored. We show that symmetry of the dynamics, especially in critical states, is a controlling feature that can be used both to ...
Bassler, Kevin E.   +2 more
core   +1 more source

Molecular Network Control Through Boolean Canalization [PDF]

open access: yes, 2015
Boolean networks are an important class of computational models for molecular interaction networks. Boolean canalization, a type of hierarchical clustering of the inputs of a Boolean function, has been extensively studied in the context of network ...
Dimitrova, Elena S., Murrugarra, David
core   +3 more sources

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