Results 71 to 80 of about 28,651 (221)
Thallusin Quantification in Marine Bacteria and Algae Cultures
Marine Drugs, 2022 Thallusin, a highly biologically active, phytohormone-like and bacterial compound-inducing morphogenesis of the green tide-forming macroalga Ulva (Chlorophyta), was determined in bacteria and algae cultures. A sensitive and selective method was developed
Johann F. Ulrich +5 more
doaj +1 more source
, 2012 This paper deals with the long-time behavior of solutions of nonlinear reaction-diffusion equations describing formation of morphogen gradients, the concentration fields of molecules acting as spatial regulators of cell differentiation in developing ...
A. D. Lander +30 more
core +1 more source
The pseudo-compartment method for coupling PDE and compartment-based models of diffusion [PDF]
, 2015 Spatial reaction-diffusion models have been employed to describe many emergent phenomena in biological systems. The modelling technique most commonly adopted in the literature implements systems of partial differential equations (PDEs), which assumes ...
Flegg, Mark B., Yates, Christian A.
core +4 more sources
Advanced Science, EarlyView.The ER's continuous tubular network is maintained by ER‐shaping proteins whose mutation or dysregulation contributes to neurodegenerative diseases. Here, we show that ER morphology sets the speed of Ca2+ store replenishment between firing events. Disrupting ER continuity slows intra‐ER Ca2+ redistribution from extracellular refill (SOCE) sites, driving
Valentina Davi +13 more
wiley +1 more source
Establishing Hedgehog Gradients during Neural Development
Cells, 2023 A morphogen is a signaling molecule that induces specific cellular responses depending on its local concentration. The concept of morphogenic gradients has been a central paradigm of developmental biology for decades.
Sara Douceau +2 more
doaj +1 more source
Embryonic Pattern Scaling Achieved by Oppositely Directed Morphogen Gradients
, 2006 Morphogens are proteins, often produced in a localised region, whose concentrations spatially demarcate regions of differing gene expression in developing embryos.
Ben-Naim E +8 more
core +1 more source
The Bicoid Morphogen System [PDF]
Current Biology, 2010 Several fundamental concepts of developmental biology have emerged from studies on the early development of the Drosophila melanogaster embryo. In the late 1980s, studies on Bicoid provided the first solid experimental evidence for the existence of morphogenetic gradients and their implication in axial patterning.
Porcher, Aude, Dostatni, Nathalie
openaire +2 more sources
Understanding the spacing of placodes in the eye: A comparative study across age and species
The Anatomical Record, EarlyView.Abstract The conjunctival placodes of the avian eye form in an intriguing and conserved sequence in a circular annulus around the cornea. These 13–16 placodes develop into papillae that are essential for inducing underlying intramembranous flat bones, known as scleral ossicles, which form an important part of the ocular skeleton.
Florence Joseph +1 more
wiley +1 more source
eLife, 2021 Dorsoventral pattering relies on Toll and BMP signalling in all insects studied so far, with variations in the relative contributions of both pathways. Drosophila and the beetle Tribolium share extensive dependence on Toll, while representatives of more ...
Matthias Pechmann +8 more
doaj +1 more source
Effects of intrinsic stochasticity on delayed reaction-diffusion patterning systems [PDF]
, 2012 Cellular gene expression is a complex process involving many steps, including the transcription of DNA and translation of mRNA; hence the synthesis of proteins requires a considerable amount of time, from ten minutes to several hours.
Baker, R. E. +4 more
core +2 more sources