http://pre.aps.org/ Recently published articles in Phys. Rev. E in the Table of Content section "Biological physics" en-us Copyright (c) 2009 The American Physical Society 2009-11-22T06:17:28-05:00 assocpub@aps.org rss@aps.org hourly 4 2009-11-22T06:17:28-05:00 rss@aps.org http://link.aps.org/doi/10.1103/PhysRevE.80.051917 Author(s): Ming-Chya Wu, Eiichi Watanabe, Zbigniew R. Struzik, Chin-Kun Hu, and Yoshiharu Yamamoto<br/>Ventricular fibrillation (VF) is known to be the most dangerous cardiac arrhythmia, frequently leading to sudden cardiac death (SCD). During VF, cardiac output drops to nil and, unless the fibrillation is promptly halted, death usually ensues within minutes. While delivering life saving electrical s...<br/>[Phys. Rev. E 80, 051917] Published Fri Nov 20, 2009 Ming-Chya Wu, Eiichi Watanabe, Zbigniew R. Struzik, Chin-Kun Hu, and Yoshiharu Yamamoto 2009-11-20T00:00:00-05:00 Personal use only, all commercial or other reuse prohibited 10.1103/PhysRevE.80.051917 Phys. Rev. E 80, 051917 text/html article Physical Review E 80 5 2009-11-20T00:00:00-05:00 051917 Biological physics Biological physics http://link.aps.org/doi/10.1103/PhysRevE.80.051916 Author(s): J. C. Phillips<br/>Proteins appear to be the most dramatic natural example of self-organized criticality (SOC), a concept that explains many otherwise apparently unlikely phenomena. Protein functionality is often dominated by long-range hydro(phobic/philic) interactions, which both drive protein compaction and mediate...<br/>[Phys. Rev. E 80, 051916] Published Fri Nov 20, 2009 J. C. Phillips 2009-11-20T00:00:00-05:00 Personal use only, all commercial or other reuse prohibited 10.1103/PhysRevE.80.051916 Phys. Rev. E 80, 051916 text/html article Physical Review E 80 5 2009-11-20T00:00:00-05:00 051916 Biological physics Biological physics http://link.aps.org/doi/10.1103/PhysRevE.80.051915 Author(s): G. Rozhnova and A. Nunes<br/>In this paper, we consider a simple stochastic epidemic model on large regular random graphs and the stochastic process that corresponds to this dynamics in the standard pair approximation. Using the fact that the nodes of a pair are unlikely to share neighbors, we derive the master equation for thi...<br/>[Phys. Rev. E 80, 051915] Published Fri Nov 20, 2009 G. Rozhnova and A. Nunes 2009-11-20T00:00:00-05:00 Personal use only, all commercial or other reuse prohibited 10.1103/PhysRevE.80.051915 Phys. Rev. E 80, 051915 text/html article Physical Review E 80 5 2009-11-20T00:00:00-05:00 051915 Biological physics Biological physics http://link.aps.org/doi/10.1103/PhysRevE.80.051914 Author(s): L. S. Borkowski<br/>We study the response of a Hodgkin-Huxley neuron stimulated by a periodic sequence of conductance pulses arriving through the synapse in the high-frequency regime. In addition to the usual excitation threshold there is a smooth crossover from the firing to the silent regime for increasing pulse ampl...<br/>[Phys. Rev. E 80, 051914] Published Thu Nov 19, 2009 L. S. Borkowski 2009-11-19T00:00:00-05:00 Personal use only, all commercial or other reuse prohibited 10.1103/PhysRevE.80.051914 Phys. Rev. E 80, 051914 text/html article Physical Review E 80 5 2009-11-19T00:00:00-05:00 051914 Biological physics Biological physics http://link.aps.org/doi/10.1103/PhysRevE.80.051913 Author(s): S. Hodis and M. Zamir<br/>A standing difficulty in the problem of blood vessel tethering has been that only one of the two required boundary conditions can be fully specified, namely, that at the inner (endothelial) wall surface. The other, at the outer layer of the vessel wall, is not known except in the limiting case where...<br/>[Phys. Rev. E 80, 051913] Published Wed Nov 18, 2009 S. Hodis and M. Zamir 2009-11-18T00:00:00-05:00 Personal use only, all commercial or other reuse prohibited 10.1103/PhysRevE.80.051913 Phys. Rev. E 80, 051913 text/html article Physical Review E 80 5 2009-11-18T00:00:00-05:00 051913 Biological physics Biological physics http://link.aps.org/doi/10.1103/PhysRevE.80.051912 Author(s): J. P. Hague and E. M. L. Chung<br/>We discuss the physics of embolic stroke using a minimal model of emboli moving through the cerebral arteries. Our model of the blood flow network consists of a bifurcating tree into which we introduce particles (emboli) that halt flow on reaching a node of similar size. Flow is weighted away from b...<br/>[Phys. Rev. E 80, 051912] Published Wed Nov 18, 2009 J. P. Hague and E. M. L. Chung 2009-11-18T00:00:00-05:00 Personal use only, all commercial or other reuse prohibited 10.1103/PhysRevE.80.051912 Phys. Rev. E 80, 051912 text/html article Physical Review E 80 5 2009-11-18T00:00:00-05:00 051912 Biological physics Biological physics http://link.aps.org/doi/10.1103/PhysRevE.80.051911 Author(s): A. M. Leshansky<br/>It has been known for some time that some microorganisms can swim faster in high-viscosity gel-forming polymer solutions. These gel-like media come to mimic highly viscous heterogeneous environment that these microorganisms encounter in-vivo. The qualitative explanation of this phenomena first offer...<br/>[Phys. Rev. E 80, 051911] Published Wed Nov 18, 2009 A. M. Leshansky 2009-11-18T00:00:00-05:00 Personal use only, all commercial or other reuse prohibited 10.1103/PhysRevE.80.051911 Phys. Rev. E 80, 051911 text/html article Physical Review E 80 5 2009-11-18T00:00:00-05:00 051911 Biological physics Biological physics http://link.aps.org/doi/10.1103/PhysRevE.80.051910 Author(s): Jana Gevertz and S. Torquato<br/>An in silico tool that can be utilized in the clinic to predict neoplastic progression and propose individualized treatment strategies is the holy grail of computational tumor modeling. Building such a tool requires the development and successful integration of a number of biophysical and mathematic...<br/>[Phys. Rev. E 80, 051910] Published Mon Nov 16, 2009 Jana Gevertz and S. Torquato 2009-11-16T00:00:00-05:00 Personal use only, all commercial or other reuse prohibited 10.1103/PhysRevE.80.051910 Phys. Rev. E 80, 051910 text/html article Physical Review E 80 5 2009-11-16T00:00:00-05:00 051910 Biological physics Biological physics http://link.aps.org/doi/10.1103/PhysRevE.80.051909 Author(s): Jesús Pando, Luke Sands, and Sean E. Shaheen<br/>We subject the primary sequence of proteins gathered from the Structural Classification of Proteins (SCOP) database to a discrete wavelet transform (DWT) analysis to search for predictors of secondary structures. We use proteins with both alpha helices and beta sheets (the A/B , A+B databases from S...<br/>[Phys. Rev. E 80, 051909] Published Mon Nov 16, 2009 Jesús Pando, Luke Sands, and Sean E. Shaheen 2009-11-16T00:00:00-05:00 Personal use only, all commercial or other reuse prohibited 10.1103/PhysRevE.80.051909 Phys. Rev. E 80, 051909 text/html article Physical Review E 80 5 2009-11-16T00:00:00-05:00 051909 Biological physics Biological physics http://link.aps.org/doi/10.1103/PhysRevE.80.051908 Author(s): K. I. Mazzitello, C. M. Arizmendi, F. Family, and H. E. Grossniklaus<br/>The kinetics of lipofuscin growth in diseased retinal pigment epithelium cells is investigated using Monte Carlo simulations and scaling theory on a cluster aggregation model. The model captures the essential physics of lipofuscin growth in the cells. A remarkable feature is that small particles may...<br/>[Phys. Rev. E 80, 051908] Published Thu Nov 12, 2009 K. I. Mazzitello, C. M. Arizmendi, F. Family, and H. E. Grossniklaus 2009-11-12T00:00:00-05:00 Personal use only, all commercial or other reuse prohibited 10.1103/PhysRevE.80.051908 Phys. Rev. E 80, 051908 text/html article Physical Review E 80 5 2009-11-12T00:00:00-05:00 051908 Biological physics Biological physics http://link.aps.org/doi/10.1103/PhysRevE.80.051907 Author(s): Samuel D. Stranks, Heath Ecroyd, Steven Van Sluyter, Elizabeth J. Waters, John A. Carver, and Lorenz von Smekal<br/>The amorphous aggregation of proteins is associated with many phenomena, ranging from the formation of protein wine haze to the development of cataract in the eye lens and the precipitation of recombinant proteins during their expression and purification. While much literature exists describing mode...<br/>[Phys. Rev. E 80, 051907] Published Mon Nov 09, 2009 Samuel D. Stranks, Heath Ecroyd, Steven Van Sluyter, Elizabeth J. Waters, John A. Carver, and Lorenz von Smekal 2009-11-09T00:00:00-05:00 Personal use only, all commercial or other reuse prohibited 10.1103/PhysRevE.80.051907 Phys. Rev. E 80, 051907 text/html article Physical Review E 80 5 2009-11-09T00:00:00-05:00 051907 Biological physics Biological physics http://link.aps.org/doi/10.1103/PhysRevE.80.051906 Author(s): Kuniharu Kishida<br/>A blind identification method of transfer functions in feedback systems is introduced for examination of dynamical activities of cortices by magnetoencephalography study. Somatosensory activities are examined in 5 Hz periodical median nerve stimulus. In the present paper, we will try two careful pre...<br/>[Phys. Rev. E 80, 051906] Published Fri Nov 06, 2009 Kuniharu Kishida 2009-11-06T00:00:00-05:00 Personal use only, all commercial or other reuse prohibited 10.1103/PhysRevE.80.051906 Phys. Rev. E 80, 051906 text/html article Physical Review E 80 5 2009-11-06T00:00:00-05:00 051906 Biological physics Biological physics http://link.aps.org/doi/10.1103/PhysRevE.80.051905 Author(s): S. B. Rochal and V. L. Lorman<br/>A theory of a reconstructive structural transformation in icosahedral capsid shells is developed for a whole family of virulent human viruses. It is shown that the reversible rearrangement of proteins during the virus maturation transformation is driven by the variation in the wave number l associat...<br/>[Phys. Rev. E 80, 051905] Published Fri Nov 06, 2009 S. B. Rochal and V. L. Lorman 2009-11-06T00:00:00-05:00 Personal use only, all commercial or other reuse prohibited 10.1103/PhysRevE.80.051905 Phys. Rev. E 80, 051905 text/html article Physical Review E 80 5 2009-11-06T00:00:00-05:00 051905 Biological physics Biological physics http://link.aps.org/doi/10.1103/PhysRevE.80.051904 Author(s): Surya K. Ghosh, Kulveer Singh, and Anirban Sain<br/>Recently many important biopolymers have been found to possess intrinsic curvature. Tubulin protofilaments in animal cells, FtsZ filaments in bacteria and double stranded DNA are examples. We examine how intrinsic curvature influences the conformational statistics of such polymers. We give exact res...<br/>[Phys. Rev. E 80, 051904] Published Thu Nov 05, 2009 Surya K. Ghosh, Kulveer Singh, and Anirban Sain 2009-11-05T00:00:00-05:00 Personal use only, all commercial or other reuse prohibited 10.1103/PhysRevE.80.051904 Phys. Rev. E 80, 051904 text/html article Physical Review E 80 5 2009-11-05T00:00:00-05:00 051904 Biological physics Biological physics http://link.aps.org/doi/10.1103/PhysRevE.80.051903 Author(s): Géza I. Márk, Zofia Vértesy, Krisztián Kertész, Zsolt Bálint, and László P. Biró<br/>In order to study local and global order in butterfly wing scales possessing structural colors, we have developed a direct space algorithm, based on averaging the local environment of the repetitive units building up the structure. The method provides the statistical distribution of the local enviro...<br/>[Phys. Rev. E 80, 051903] Published Thu Nov 05, 2009 Géza I. Márk, Zofia Vértesy, Krisztián Kertész, Zsolt Bálint, and László P. Biró 2009-11-05T00:00:00-05:00 Personal use only, all commercial or other reuse prohibited 10.1103/PhysRevE.80.051903 Phys. Rev. E 80, 051903 text/html article Physical Review E 80 5 2009-11-05T00:00:00-05:00 051903 Biological physics Biological physics http://link.aps.org/doi/10.1103/PhysRevE.80.051902 Author(s): Dezhe Z. Jin<br/>Songs of songbird species such as Bengalese finch consist of sequences of syllables. While syllables are temporally stereotypical, syllable sequences can vary and follow complex, probabilistic transition rules. Recent experiments and computational models suggest that a syllable is encoded in a chain...<br/>[Phys. Rev. E 80, 051902] Published Thu Nov 05, 2009 Dezhe Z. Jin 2009-11-05T00:00:00-05:00 Personal use only, all commercial or other reuse prohibited 10.1103/PhysRevE.80.051902 Phys. Rev. E 80, 051902 text/html article Physical Review E 80 5 2009-11-05T00:00:00-05:00 051902 Biological physics Biological physics http://link.aps.org/doi/10.1103/PhysRevE.80.051901 Author(s): Wei Zhang, Rong Yang, and Sergio E. Ulloa<br/>Charge transport in DNA molecules has raised considerable interest because of its importance in biological processes and potential applications in nanoscale devices. A DNA molecule can be viewed as a quasi-one-dimensional system composed of stacked base pairs ( AT , CG ) together with backbones of s...<br/>[Phys. Rev. E 80, 051901] Published Wed Nov 04, 2009 Wei Zhang, Rong Yang, and Sergio E. Ulloa 2009-11-04T00:00:00-05:00 Personal use only, all commercial or other reuse prohibited 10.1103/PhysRevE.80.051901 Phys. Rev. E 80, 051901 text/html article Physical Review E 80 5 2009-11-04T00:00:00-05:00 051901 Biological physics Biological physics http://link.aps.org/doi/10.1103/PhysRevE.80.041931 Author(s): Akinori Awazu and Kunihiko Kaneko<br/>Study of reversible catalytic reaction networks is important not only as an issue for chemical thermodynamics but also for protocells. From extensive numerical simulations and theoretical analysis, slow relaxation dynamics to sustain nonequlibrium states are commonly observed. These dynamics show tw...<br/>[Phys. Rev. E 80, 041931] Published Fri Oct 30, 2009 Akinori Awazu and Kunihiko Kaneko 2009-10-30T00:00:00-04:00 Personal use only, all commercial or other reuse prohibited 10.1103/PhysRevE.80.041931 Phys. Rev. E 80, 041931 text/html article Physical Review E 80 4 2009-10-30T00:00:00-04:00 041931 Biological physics Biological physics http://link.aps.org/doi/10.1103/PhysRevE.80.041930 Author(s): Anandamohan Ghosh, Dipanjan Roy, and Viktor K. Jirsa<br/>Neuronal cells in isolation or as an assembly exhibit bursting behavior on two different time scales. We introduce a simple one-dimensional model which requires only one phase variable to describe the phenomenon of parabolic bursting. The analysis in the continuum limit reveals that for any unimodal...<br/>[Phys. Rev. E 80, 041930] Published Thu Oct 29, 2009 Anandamohan Ghosh, Dipanjan Roy, and Viktor K. Jirsa 2009-10-29T00:00:00-04:00 Personal use only, all commercial or other reuse prohibited 10.1103/PhysRevE.80.041930 Phys. Rev. E 80, 041930 text/html article Physical Review E 80 4 2009-10-29T00:00:00-04:00 041930 Biological physics Biological physics http://link.aps.org/doi/10.1103/PhysRevE.80.041929 Author(s): Emanuel Schneck, Rafael G. Oliveira, Florian Rehfeldt, Bruno Demé, Klaus Brandenburg, Ulrich Seydel, and Motomu Tanaka<br/>Specular and off-specular neutron scattering are used to study the influence of molecular chemistry (mutation) on the intermembrane interactions and mechanical properties of the outer membrane of Gram-negative bacteria consisting of lipopolysaccharides (LPSs). For this purpose, solid-supported multi...<br/>[Phys. Rev. E 80, 041929] Published Wed Oct 28, 2009 Emanuel Schneck, Rafael G. Oliveira, Florian Rehfeldt, Bruno Demé, Klaus Brandenburg, Ulrich Seydel, and Motomu Tanaka 2009-10-28T00:00:00-04:00 Personal use only, all commercial or other reuse prohibited 10.1103/PhysRevE.80.041929 Phys. Rev. E 80, 041929 text/html article Physical Review E 80 4 2009-10-28T00:00:00-04:00 041929 Biological physics Biological physics http://link.aps.org/doi/10.1103/PhysRevE.80.041928 Author(s): Yan Chai, Stefan Klumpp, Melanie J. I. Müller, and Reinhard Lipowsky<br/>We study the traffic of two types of molecular motors using the two-species asymmetric simple exclusion process (ASEP) with periodic boundary conditions and with attachment and detachment of particles. We determine characteristic properties such as motor densities and currents by simulations and ana...<br/>[Phys. Rev. E 80, 041928] Published Wed Oct 28, 2009 Yan Chai, Stefan Klumpp, Melanie J. I. Müller, and Reinhard Lipowsky 2009-10-28T00:00:00-04:00 Personal use only, all commercial or other reuse prohibited 10.1103/PhysRevE.80.041928 Phys. Rev. E 80, 041928 text/html article Physical Review E 80 4 2009-10-28T00:00:00-04:00 041928 Biological physics Biological physics http://link.aps.org/doi/10.1103/PhysRevE.80.041927 Author(s): Yan Mu and Yi Qin Gao<br/>In this paper, we investigated the spontaneous formation of aggregation structures of amyloid-forming peptide (GGVVIA) using a coarse-grained model and Monte Carlo simulations. The effects of concentration and temperature on the formation of different aggregation structures were studied. Three types...<br/>[Phys. Rev. E 80, 041927] Published Mon Oct 26, 2009 Yan Mu and Yi Qin Gao 2009-10-26T00:00:00-04:00 Personal use only, all commercial or other reuse prohibited 10.1103/PhysRevE.80.041927 Phys. Rev. E 80, 041927 text/html article Physical Review E 80 4 2009-10-26T00:00:00-04:00 041927 Biological physics Biological physics http://link.aps.org/doi/10.1103/PhysRevE.80.041926 Author(s): Matías G. dell’Erba and Guillermo R. Zemba<br/>We study a simplified model of the RNA molecule proposed by Vernizzi in the regime of strong concentration of positive ions in solution. The model considers a flexible chain of equal bases that can pairwise interact with any other one along the chain while preserving the property of saturation of th...<br/>[Phys. Rev. E 80, 041926] Published Fri Oct 23, 2009 Matías G. dell’Erba and Guillermo R. Zemba 2009-10-23T00:00:00-04:00 Personal use only, all commercial or other reuse prohibited 10.1103/PhysRevE.80.041926 Phys. Rev. E 80, 041926 text/html article Physical Review E 80 4 2009-10-23T00:00:00-04:00 041926 Biological physics Biological physics http://link.aps.org/doi/10.1103/PhysRevE.80.041925 Author(s): Brian Skinner, M. S. Loth, and B. I. Shklovksii<br/>Recent experiments measuring the electrical conductivity of DNA molecules highlight the need for a theoretical model of ion transport along a charged surface. Here we present a simple theory based on the idea of unbinding of ion pairs. The strong humidity dependence of conductivity is explained by t...<br/>[Phys. Rev. E 80, 041925] Published Fri Oct 23, 2009 Brian Skinner, M. S. Loth, and B. I. Shklovksii 2009-10-23T00:00:00-04:00 Personal use only, all commercial or other reuse prohibited 10.1103/PhysRevE.80.041925 Phys. Rev. E 80, 041925 text/html article Physical Review E 80 4 2009-10-23T00:00:00-04:00 041925 Biological physics Biological physics http://link.aps.org/doi/10.1103/PhysRevE.80.041924 Author(s): T. Idema, J. M. J. van Leeuwen, and C. Storm<br/>The ternary system consisting of cholesterol, a saturated lipid, and an unsaturated one exhibits a rich phase behavior with multiple phase coexistence regimes. Remarkably, phase separation even occurs when each of the three binary systems consisting of two of these components is a uniform mixture. W...<br/>[Phys. Rev. E 80, 041924] Published Fri Oct 23, 2009 T. Idema, J. M. J. van Leeuwen, and C. Storm 2009-10-23T00:00:00-04:00 Personal use only, all commercial or other reuse prohibited 10.1103/PhysRevE.80.041924 Phys. Rev. E 80, 041924 text/html article Physical Review E 80 4 2009-10-23T00:00:00-04:00 041924 Biological physics Biological physics http://link.aps.org/doi/10.1103/PhysRevE.80.041923 Author(s): Ziqing Wang and Ming Li<br/>A transition rate model of cargo transport by N molecular motors is proposed. Under the assumption of steady state, the force-velocity curve of multimotor system can be derived from the force-velocity curve of a single motor. Our work shows, in the case of low load, that the velocity of multimotor s...<br/>[Phys. Rev. E 80, 041923] Published Thu Oct 22, 2009 Ziqing Wang and Ming Li 2009-10-22T00:00:00-04:00 Personal use only, all commercial or other reuse prohibited 10.1103/PhysRevE.80.041923 Phys. Rev. E 80, 041923 text/html article Physical Review E 80 4 2009-10-22T00:00:00-04:00 041923 Biological physics Biological physics http://link.aps.org/doi/10.1103/PhysRevE.80.041922 Author(s): Brian M. Haines, Andrey Sokolov, Igor S. Aranson, Leonid Berlyand, and Dmitry A. Karpeev<br/>We derive the effective viscosity of dilute suspensions of swimming bacteria from the microscopic details of the interaction of an elongated body with the background flow. An individual bacterium propels itself forward by rotating its flagella and reorients itself randomly by tumbling. Due to the ba...<br/>[Phys. Rev. E 80, 041922] Published Thu Oct 22, 2009 Brian M. Haines, Andrey Sokolov, Igor S. Aranson, Leonid Berlyand, and Dmitry A. Karpeev 2009-10-22T00:00:00-04:00 Personal use only, all commercial or other reuse prohibited 10.1103/PhysRevE.80.041922 Phys. Rev. E 80, 041922 text/html article Physical Review E 80 4 2009-10-22T00:00:00-04:00 041922 Biological physics Biological physics http://link.aps.org/doi/10.1103/PhysRevE.80.041921 Author(s): Andrew Mugler, Aleksandra M. Walczak, and Chris H. Wiggins<br/>Signal-processing molecules inside cells are often present at low copy number, which necessitates probabilistic models to account for intrinsic noise. Probability distributions have traditionally been found using simulation-based approaches which then require estimating the distributions from many s...<br/>[Phys. Rev. E 80, 041921] Published Tue Oct 20, 2009 Andrew Mugler, Aleksandra M. Walczak, and Chris H. Wiggins 2009-10-20T00:00:00-04:00 Personal use only, all commercial or other reuse prohibited 10.1103/PhysRevE.80.041921 Phys. Rev. E 80, 041921 text/html article Physical Review E 80 4 2009-10-20T00:00:00-04:00 041921 Biological physics Biological physics http://link.aps.org/doi/10.1103/PhysRevE.80.041920 Author(s): David Juher, Jordi Ripoll, and Joan Saldaña<br/>We present a study of the continuous-time equations governing the dynamics of a susceptible-infected-susceptible model on heterogeneous metapopulations. These equations have been recently proposed as an alternative formulation for the spread of infectious diseases in metapopulations in a continuous-...<br/>[Phys. Rev. E 80, 041920] Published Tue Oct 20, 2009 David Juher, Jordi Ripoll, and Joan Saldaña 2009-10-20T00:00:00-04:00 Personal use only, all commercial or other reuse prohibited 10.1103/PhysRevE.80.041920 Phys. Rev. E 80, 041920 text/html article Physical Review E 80 4 2009-10-20T00:00:00-04:00 041920 Biological physics Biological physics http://link.aps.org/doi/10.1103/PhysRevE.80.040903 Author(s): R. J. Hawkins, O. Bénichou, M. Piel, and R. Voituriez<br/>Many cellular processes require a polarization axis which generally initially emerges as an inhomogeneous distribution of molecular markers in the cell. We present a simple analytical model of a general mechanism of cell polarization taking into account the positive feedback due to the coupled dynam...<br/><img src="http://prola.aps.org/graphics/rapid30x30.gif" width="30" height="30" alt="Rapid Communication"/><br/>[Phys. Rev. E 80, 040903] Published Mon Oct 19, 2009 R. J. Hawkins, O. Bénichou, M. Piel, and R. Voituriez 2009-10-19T00:00:00-04:00 Personal use only, all commercial or other reuse prohibited 10.1103/PhysRevE.80.040903 Phys. Rev. E 80, 040903 text/html article Physical Review E 80 4 2009-10-19T00:00:00-04:00 040903 Biological physics Biological physics