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Phys. Rev. Lett. 90, 118101 (2003) [4 pages]

Percolation, Morphogenesis, and Burgers Dynamics in Blood Vessels Formation

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A. Gamba1, D. Ambrosi1, A. Coniglio2, A. de Candia2, S. Di Talia2, E. Giraudo3, G. Serini3, L. Preziosi1, and F. Bussolino3
1Dipartimento di Matematica, Politecnico di Torino, 10129 Torino, Italia
2Dipartimento di Scienze Fisiche, Università di Napoli “Federico II,” and INFM, Unità di Napoli, 80126 Napoli, Italia
3Istituto per la Ricerca e la Cura del Cancro, 10060 Candiolo (TO), Italia

Received 23 July 2002; published 17 March 2003

Experiments of in vitro formation of blood vessels show that cells randomly spread on a gel matrix autonomously organize to form a connected vascular network. We propose a simple model which reproduces many features of the biological system. We show that both the model and the real system exhibit a fractal behavior at small scales, due to the process of migration and dynamical aggregation, followed at large scale by a random percolation behavior due to the coalescence of aggregates. The results are in good agreement with the analysis performed on the experimental data.

© 2003 The American Physical Society

URL:
http://link.aps.org/doi/10.1103/PhysRevLett.90.118101
DOI:
10.1103/PhysRevLett.90.118101
PACS:
87.10.+e, 87.17.–d, 64.60.Ak