Acta Biotheoretica 26 (4) (1977)
|Abstract||The control of pattern formation and the significance of gradients is reconsidered on the basis of the concept of cell sociology (which takes into account continuous exchange of information between cells and the possibility of autonomous progression in differentiation). Not all traits of a pattern are imposed by a single prepattern, which would be an organized molecular framework or a gradient. Patterns are unfolded in steps; these are readjustments of a cell population to intrinsic and extrinsic changes in cell activities. Prepatterns are the various components of the programme of every readjustment and are established by information of various origins, which can be dissociated experimentally: determination (elementary social prepattern), pre-existing organization (antecedent pp.), surrounding cell populations (environmental pp.), position among other tissues (positional pp.) and the organization of inducers (imprinting pp.). Every transitory pattern formed during a readjustment serves as antecedent pp. during the next readjustment. Covert graded patterns result from various aspects of the social behaviour of cells (growth, aggregation, induction, cell renewal) and may serve as antecedent or imprinting prepatterns. They appear as water marks in the final patterns, or generate overt graded patterns. They also manifest themselves in temporal patterns, particularly in gradients of relative growth.|
|Keywords||No keywords specified (fix it)|
|Through your library||Configure|
Similar books and articles
E. Dulos, J. Boissonade, J. J. Perraud, B. Rudovics & P. Kepper (1996). Chemical Morphogenesis: Turing Patterns in an Experimental Chemical System. Acta Biotheoretica 44 (3-4).
Rosine Chandebois & Jacob Faber (1987). From DNA Transcription to Visible Structure: What the Development of Multicellular Animals Teaches Us. Acta Biotheoretica 36 (2).
Jacqueline Lück & Hermann B. Lück (1995). Plant Cell Assemblage in Layers. Acta Biotheoretica 43 (1-2).
Rosine Chandebois (1981). The Problem of Automation in Animal Development: Confrontation of the Concept of Cell Sociology with Biochemical Data. Acta Biotheoretica 30 (3).
Daniel Fels (2012). Analogy Between Quantum and Cell Relations. Axiomathes 22 (4):509-520.
Hisao Honda, Masaharu Tanemura & Akihiro Yoshida (2000). Differentiation of Wing Epidermal Scale Cells in a Butterfly Under the Lateral Inhibition Model - Appearance of Large Cells in a Polygonal Pattern. Acta Biotheoretica 48 (2).
Rosine Chandebois (1980). Cell Sociology and the Problem of Automation in the Development of Pluricellular Animals. Acta Biotheoretica 29 (1).
Added to index2009-01-28
Total downloads3 ( #202,107 of 549,753 )
Recent downloads (6 months)1 ( #63,425 of 549,753 )
How can I increase my downloads?