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Science 8 April 1994:
Vol. 264. no. 5156, pp. 245 - 248
DOI: 10.1126/science.8146654
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Articles

Science, Vol 264, Issue 5156, 245-248
Copyright © 1994 by American Association for the Advancement of Science

articles

Morphological bifurcations involving reaction-diffusion processes during microtubule formation

J Tabony

Departement de Biologie Moleculaire et Structurale, Centre d'Etudes Nucleaire de Grenoble, France.

Nonlinear chemically dissipative mechanisms have been proposed as providing a possible underlying process for some aspects of biological self-organization, pattern formation, and morphogenesis. Nonlinearities during the formation of microtubular solutions result in a chemical instability and bifurcation between pathways leading to macroscopically self-organized states of different morphology. The self-organizing process, which contains reactive and diffusive contributions, involves chemical waves and differences in microtubule concentration in the sample. Patterns of similar appearance are observed at different distance scales. This behavior is in agreement with theories of chemically dissipative systems.


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