Relevant bibliographies by topics / Polymerization and depolymerization

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  1. Journal articles
  2. Dissertations / Theses
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  4. Book chapters
  5. Conference papers

Academic literature on the topic 'Polymerization and depolymerization'

Author: Grafiati
Published: 4 June 2025
Last updated: 15 July 2025

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Journal articles on the topic "Polymerization and depolymerization"

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Fukushima, Nobuyuki, Isao Ishii, Yoshiaki Habara, Cara B. Allen та Jerold Chun. "Dual Regulation of Actin Rearrangement through Lysophosphatidic Acid Receptor in Neuroblast Cell Lines: Actin Depolymerization by Ca2+-α-Actinin and Polymerization by Rho". Molecular Biology of the Cell 13, № 8 (2002): 2692–705. http://dx.doi.org/10.1091/mbc.01-09-0465.

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Lysophosphatidic acid (LPA) is a potent lipid mediator with actions on many cell types. Morphological changes involving actin polymerization are mediated by at least two cognate G protein-coupled receptors, LPA1/EDG-2 or LPA2/EDG-4. Herein, we show that LPA can also induce actin depolymerization preceding actin polymerization within single TR mouse immortalized neuroblasts. Actin depolymerization resulted in immediate loss of membrane ruffling, whereas actin polymerization resulted in process retraction. Each pathway was found to be independent: depolymerization mediated by intracellular calci
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Hofer, Gregor, Florian Grieder, Martin Kröger, A. Dieter Schlüter, and Thomas Weber. "Unraveling two-dimensional polymerization in the single crystal." Journal of Applied Crystallography 51, no. 2 (2018): 481–97. http://dx.doi.org/10.1107/s1600576718002820.

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Two-dimensional single-crystal-to-single-crystal polymerization and depolymerization are described in detail. The results are based on in-house and synchrotron X-ray diffraction experiments conducted on several samples at 100 K and room temperature. The reactions are associated with considerable molecular motions of all components (monomer, template and incorporated solvent molecules), which can be as large as 1 Å. Continuous polymerization leads to a gradual gap opening between the emerging two-dimensional polymer layers, which allows for increased mobility of the solvent molecules. The posit
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Wang, Hyun Suk, and Athina Anastasaki. "Chemical Recycling of Polymethacrylates Synthesized by RAFT Polymerization." CHIMIA 77, no. 4 (2023): 217. http://dx.doi.org/10.2533/chimia.2023.217.

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Reversing controlled radical polymerization and regenerating the monomer has been a long-standing challenge for fundamental research and practical applications. Herein, we report a highly efficient depolymerization method for various polymethacrylates synthesized by reversible addition-fragmentation chain-transfer (RAFT) polymerization. The depolymerization process, which does not require any catalyst, exhibits near-quantitative conversions of up to 92%. The key aspect of our approach is the utilization of the high end-group fidelity of RAFT polymers to generate chain-end radicals at 120 °C. T
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WILLIAMS, J., H. SCHULTEN, N. VANDERBORGH, and R. WALKER. "Polymerization-depolymerization of 1,3-dioxolane." Polymer 33, no. 21 (1992): 4630–34. http://dx.doi.org/10.1016/0032-3861(92)90424-u.

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Kruus, P., J. A. G. Lawrie, and M. L. O'Neill. "Polymerization and depolymerization by ultrasound." Ultrasonics 26, no. 6 (1988): 352–55. http://dx.doi.org/10.1016/0041-624x(88)90035-2.

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Geng, Huawei, Zonggang Mou, Ziyong Liu, Fuli Li, and Cheng Yang. "Biochemical Degradation of Chitosan over Immobilized Cellulase and Supported Fenton Catalysts." Catalysts 10, no. 6 (2020): 604. http://dx.doi.org/10.3390/catal10060604.

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This paper describes the application of Fe-MCM-48 (Mobil Composition of Matter No.48) and cellulase-MCM-48 catalysts for the depolymerization of chitosan. The results show that H2O2 is a good oxidant for the depolymerization of chitosan in the presence of Fe-MCM-48. The average polymerization degree of the product decreased to 6.1, and decreased to 29.2 when cellulase-MCM-48 was used as a catalyst, because the effect of the enzyme was affected by the molecular structure of chitosan. When both materials were used for depolymerization, the average degree of polymerization sharply decreased to 3.
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Wang, Hyun Suk, Mikhail Agrachev, Hongsik Kim, et al. "Visible light–triggered depolymerization of commercial polymethacrylates." Science 387, no. 6736 (2025): 874–80. https://doi.org/10.1126/science.adr1637.

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The reversion of vinyl polymers with carbon-carbon backbones to their monomers represents an ideal path to alleviate the growing plastic waste stream. However, depolymerizing such stable materials remains a challenge, with state-of-the-art methods relying on “designer” polymers that are neither commercially produced nor suitable for real-world applications. In this work, we report a main chain–initiated, visible light–triggered depolymerization directly applicable to commercial polymers containing undisclosed impurities (e.g., comonomers, additives, or dyes). By in situ generation of chlorine
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Flanders, Michael J., and William M. Gramlich. "Reversible-addition fragmentation chain transfer (RAFT) mediated depolymerization of brush polymers." Polymer Chemistry 9, no. 17 (2018): 2328–35. http://dx.doi.org/10.1039/c8py00446c.

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Hirshman, Carol A., Defen Zhu, Reynold A. Panettieri та Charles W. Emala. "Actin depolymerization via the β-adrenoceptor in airway smooth muscle cells: a novel PKA-independent pathway". American Journal of Physiology-Cell Physiology 281, № 5 (2001): C1468—C1476. http://dx.doi.org/10.1152/ajpcell.2001.281.5.c1468.

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Actin is a major functional and structural cytoskeletal protein that mediates such diverse processes as motility, cytokinesis, contraction, and control of cell shape and polarity. While many extracellular signals are known to mediate actin filament polymerization, considerably less is known about signals that mediate depolymerization of the actin cytoskeleton. Human airway smooth muscle cells were briefly exposed to isoproterenol, forskolin, or the cAMP-dependent protein kinase A (PKA) agonist stimulatory diastereoisomer of adenosine 3′,5′-cyclic monophosphate (Sp-cAMPS). Actin polymerization
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Tirnauer, Jennifer S., E. D. Salmon, and Timothy J. Mitchison. "Microtubule Plus-End Dynamics in Xenopus Egg Extract Spindles." Molecular Biology of the Cell 15, no. 4 (2004): 1776–84. http://dx.doi.org/10.1091/mbc.e03-11-0824.

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Microtubule dynamics underlie spindle assembly, yet we do not know how the spindle environment affects these dynamics. We developed methods for measuring two key parameters of microtubule plus-end dynamic instability in Xenopus egg extract spindles. To measure plus-end polymerization rates and localize growing plus ends, we used fluorescence confocal imaging of EB1. This revealed plus-end polymerization throughout the spindle at ∼11 μm/min, similar to astral microtubules, suggesting polymerization velocity is not regionally regulated by the spindle. The ratio of EB1 to microtubule fluorescence
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Dissertations / Theses on the topic "Polymerization and depolymerization"

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Zumdieck, Alexander. "Dynamics of Active Filament Systems: The Role of Filament Polymerization and Depolymerization." Doctoral thesis, Technische Universität Dresden, 2005. https://tud.qucosa.de/id/qucosa%3A24642.

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Aktive Filament-Systeme, wie zum Beispiel das Zellskelett, sind Beispiele einer interessanten Klasse neuartiger Materialien, die eine wichtige Rolle in der belebten Natur spielen. Viele wichtige Prozesse in lebenden Zellen wie zum Beispiel die Zellbewegung oder Zellteilung basieren auf dem Zellskelett. Das Zellskelett besteht aus Protein-Filamenten, molekularen Motoren und einer großen Zahl weiterer Proteine, die an die Filamente binden und diese zu einem Netz verbinden können. Die Filamente selber sind semifexible Polymere, typischerweise einige Mikrometer lang und bestehen aus einigen hunder
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Won, Chee-Youb. "Depolymerization of nylon 6,6 in the presence of phase transfer catalyst." Thesis, Georgia Institute of Technology, 1994. http://hdl.handle.net/1853/8707.

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LeBoeuf, Leighton Lee Jr. "Investigation of rabid low temperature depolymerization of polyethylene terephthalate : a novel approach." Thesis, Georgia Institute of Technology, 1988. http://hdl.handle.net/1853/8588.

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Olarte, Mariefel Valenzuela. "Base-catalyzed depolymerization of lignin and hydrodeoxygenation of lignin model compounds for alternative fuel production." Diss., Georgia Institute of Technology, 2011. http://hdl.handle.net/1853/39613.

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This study considered the potential use of lignin as possible renewable fuel and chemical feedstock source. Among the various polymers present in lignocellulosic biomass, the polyaromatic lignin is the one component that is most chemically similar to petroleum. However, it still contains a much larger amount of oxygen compared to crude oil. As such, two strategies were employed in this study: (1) studying the lignin depolymerization in the presence of high temperature and base catalysts; and, (2) employing hydrodeoxygenation as a means to decrease the O/C ratio in lignin-derived model compound
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A, S. Jijumon. "Systematic characterization of a large number of Microtubule-Associated Proteins using purification-free TIRF-reconstitution assays Purification of tubulin with controlled post-translational modifications by polymerization–depolymerization cycles Microtubule-Associated Proteins: Structuring the Cytoskeleton Purification of custom modified tubulin from cell lines and mouse brains by polymerization-depolymerization cycles." Thesis, université Paris-Saclay, 2021. http://www.theses.fr/2021UPASL007.

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Le cytosquelette des microtubules (MTs) est constitué de filaments dynamiques impliqués dans une multitude de fonctions telles que la division cellulaire, le maintien de forme des cellules, les battements ciliaires ou encore la différenciation neuronale. Une régulation stricte des fonctions des MTs est donc d'une grande importance pour l'homéostasie cellulaire, et toute perturbation pourrait potentiellement conduire à des maladies comme le cancer, les ciliopathies ou la neurodégénérescence. Dans un contexte cellulaire, les propriétés des MTs peuvent être contrôlées par leurs interactions avec
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Moreira, Ana Sofia Pereira. "Study of modifications induced by thermal and oxidative treatment in oligo and polysaccharides of coffee by mass spectrometry." Doctoral thesis, Universidade de Aveiro, 2016. http://hdl.handle.net/10773/17074.

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Doutoramento em Bioquímica<br>Os polissacarídeos são os componentes maioritários dos grãos de café verde e torrado e da bebida de café. Os mais abundantes são as galactomananas, seguindo-se as arabinogalactanas. Durante o processo de torra, as galactomananas e arabinogalactanas sofrem modificações estruturais, as quais estão longe de estar completamente elucidadas devido à sua diversidade e à complexidade estrutural dos compostos formados. Durante o processo de torra, as galactomananas e arabinogalactanas reagem com proteínas, ácidos clorogénicos e sacarose, originando compostos castanh
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Zumdieck, Alexander [Verfasser]. "Dynamics of active filament systems : the role of filament polymerization and depolymerization / von Alexander Zumdieck." 2005. http://d-nb.info/978742591/34.

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Peng, Kang-Wei, and 彭康維. "Roles of actin-binding proteins associated with actin filament polymerization/depolymerization in the differentiation of human Wharton''s jelly cells into adipocytes." Thesis, 2010. http://ndltd.ncl.edu.tw/handle/76200145134254772815.

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碩士<br>國立中興大學<br>生命科學系所<br>98<br>Wharton&apos;&apos;s jelly cells (WJCs) are the mesenchymal stem cells derived from umbilical cord, and can be expanded in culture and induced to differentiate into multiple cell types. The dynamic events in cell proliferation and differentiation of WJCs require extensive remodeling of actin filaments by the action of a multitude of actin-binding proteins (ABPs). However, information is limited on how the growth-related signal is conveyed to trigger ABPs to act in the regulation of actin filament organization in WJCs. In this study, human umbilical CD105-positiv
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Books on the topic "Polymerization and depolymerization"

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Marshall, J. Mechanisms of Saccharide Polymerization and Depolymerization. Elsevier Science & Technology Books, 2012.

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Book chapters on the topic "Polymerization and depolymerization"

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Ribeiro, Ana P. C., Marta O. Martins, Andreia O. Figueiras, and Luísa M. D. R. S. Martins. "Introduction to Polymerization and Depolymerization." In ACS Symposium Series. American Chemical Society, 2025. https://doi.org/10.1021/bk-2025-1498.ch001.

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Wagener, K. B., P. S. Wolfe, and M. D. Watson. "Metathesis Depolymerization Chemistry as a Means of Recycling Polymers to Telechelics and Fine Organic Chemicals." In Metathesis Polymerization of Olefins and Polymerization of Alkynes. Springer Netherlands, 1998. http://dx.doi.org/10.1007/978-94-011-5188-7_19.

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Lopez-Camas, Karen, Muhammad Arshad, and Aman Ullah. "Chemical Modification of Lignin by Polymerization and Depolymerization." In Lignin. Springer International Publishing, 2020. http://dx.doi.org/10.1007/978-3-030-40663-9_5.

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Rupasinghe, Buddhima. "Recycling Silicone-Based Materials: An Overview of Methods." In Rubber Materials [Working Title]. IntechOpen, 2022. http://dx.doi.org/10.5772/intechopen.108051.

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Since the early 1800s, siloxane has been an industrial staple due to its remarkable structure, but even though there are many benefits for using siloxanes, there are significant environmental implications, one of which being the lack of recyclability. As the first step to polymerization or the depolymerization of polymers, the scission of the silicone bond is essential. While condition-specific reactions investigating what triggers polymerization have been extensively studied, traditional synthesis methods are unfortunately not ideal due to their high cost and detrimental release of greenhouse gases. Since the 1950s, several studies have related to rupturing the siloxane bond, including hydrolysis, catalytic depolymerization, thermal depolymerization, and radical extractions. This work has resulted in new polymers, cyclics, and monomeric silanes. However, only a few studies have focused on how to build new silicone-based materials from the primary siloxane cyclic forms. Thus, more investigation into better methods for recycling siloxanes is needed. This chapter summarizes and categorizes the published data on the degradation and depolymerization of polysiloxanes based on their reaction temperature up to July 2021.
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Henson, C. A. "Enzymology of fructan polymerization and depolymerization in grasses." In Developments in Crop Science. Elsevier, 2000. http://dx.doi.org/10.1016/s0378-519x(00)80014-8.

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Ampe, Christophe, and Joël Vandekerckhove. "Assaying binding and covalent modifications of cytoskeletal proteins." In Cytoskeleton: signalling and cell regulation. Oxford University PressOxford, 1999. http://dx.doi.org/10.1093/oso/9780199637829.003.0002.

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Abstract Cytoskeletal dynamics are essential for cell survival. The microfilament system is one of the major players in cell motility processes. It exerts force for movement either by the action of molecular motors on relatively stable filaments or by dynamic turnover of actin filaments. In the latter case processes such as filament polymerization, depolymerization. and bundling are regulated in a temporal and spatial manner, governed by actin-binding proteins. The complexity of the actin system arises from the multitude of actin-binding proteins, often with partly overlapping activities, displaying multiple functions or effects on actin polymerization, depending on the intracellular environment. Therefore, detailed biochemical studies of individual actin-binding proteins and their interaction with actin or with regulatory ligands are necessary to understand cellular motility phenomena. The field is now slowly progressing towards in vitro studies with more than one actin-binding protein, because it is dear that in cells these proteins either compete with each other or have additive or co-operative effects on aetin reorganization.
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Patrick, Graham. "8. Polymers, plastics, and textiles." In Organic Chemistry: A Very Short Introduction. Oxford University Press, 2017. http://dx.doi.org/10.1093/actrade/9780198759775.003.0008.

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Over the last fifty years, synthetic materials have largely replaced natural materials such as wood, leather, wool, and cotton. Plastics and polymers are perhaps the most visible sign of how organic chemistry has changed society. ‘Polymers, plastics, and textiles’ explains that polymerization involves linking molecular building blocks (termed monomers) into long molecular strands called polymers and describes the two general approaches to preparing polymers: addition polymers and condensation polymers. The various health, environmental, ecological, and economic issues are considered before looking at the processes of recycling and depolymerization and recent efforts to develop biodegradable plastics and bioplastics. It ends with exciting new developments of new polymers with novel applications.
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Bergbauer, M., C. Eggert, and G. Kraepelin. "POLYMERIZATION AND DEPOLYMERIZATION OF WASTE WATER LIGNINS BY WHITE-ROT FUNGI." In Biotechnology in Pulp and Paper Manufacture. Elsevier, 1990. http://dx.doi.org/10.1016/b978-0-409-90192-4.50028-5.

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Stradal, Theresia B., Antonio S. Sechi, Jürgen Wehland, and Klemens Rottner. "The cytoskeleton." In Essential Cell Biology. Oxford University PressOxford, 1992. http://dx.doi.org/10.1093/oso/9780199638314.003.0012.

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Abstract The cytoskeleton is a complex fibrillar system required for mechanical stability and phenomena as diverse and essential as cell division, anchorage, and cell locomotion. This system further provides highways for the directed transport of organelles or vesicles, driven by molecular motors. The tight spatial compartmentalization of cytoplasmic components by the cytoskeleton is a prerequisite for the high order of signalling that discriminates eukaryotic cells from pro-karyotes. The cytoskeleton is grossly divided into three distinct filamentous systems: actin filaments, microtubules, and the intermediate filament system. All three filament systems are formed by monomers from protein families that can each polymerize into filaments in a non-covalent manner. The dynamic turnover of these filaments via polymerization and depolymerization creates the high flexibility of the cell that is needed to respond to extracellular signals or to follow endogenous rhythms like the cell cycle.
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LIMAMI, A., and V. FIALA. "Fructan Polymerization and Depolymerization During the Growth of Chicory (Cichorium Intybus L.) Plants." In Inulin and Inulin-containing Crops. Elsevier, 1993. http://dx.doi.org/10.1016/b978-0-444-89369-7.50031-2.

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Conference papers on the topic "Polymerization and depolymerization"

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Alessi, M., P. Stagnaro, L. Conzatti, et al. "ON THE CYCLO-DEPOLYMERIZATION OF ALKYL AROMATIC POLYESTERS AND THE IN SITU POLYMERIZATION OF THE CYCLIC OLIGOMERS PRODUCED." In IV INTERNATIONAL CONFERENCE TIMES OF POLYMERS (TOP) AND COMPOSITES. AIP, 2008. http://dx.doi.org/10.1063/1.2989054.

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Zhou, Gong, and Aly Shaaban. "Novel Chemical Heatpump Technology for Thermoelectric Powerplants Cooling Needs." In ASME 2020 Power Conference collocated with the 2020 International Conference on Nuclear Engineering. American Society of Mechanical Engineers, 2020. http://dx.doi.org/10.1115/power2020-16488.

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Abstract With an increasing need to find ways to reduce water consumption in industrial cooling system, dry cooling has been of a great interest. To eliminate the dependence of powerplant cooling needs on water, a novel technology, called ACTIVE, has been developed. ACTIVE, is a novel chemical heatpump cycle, cools below the ambient wet bulb temperature with coefficient of performance (COP) reaching up to 30, outperforming current dry cooling technology especially during hot summer days. ACTIVE employs a cyclic depolymerization-polymerization process, based on readily available polymers and ca
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Tartibi, M., and K. Komvopoulos. "Characterization of the Mechanical Behavior of Cell Components With an Atomic Force Microscope." In STLE/ASME 2010 International Joint Tribology Conference. ASMEDC, 2010. http://dx.doi.org/10.1115/ijtc2010-41230.

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The mechanical behavior of eukaryotic cell components is critical to cell mobility, division, signaling, and proliferation. Cell components are in such harmony with each other that often mechanical testing of individual components produces less meaningful results than testing performed within living cells. Moreover, cell components are constantly undergoing growth and remodeling, normally through polymerization and depolymerization. An appropriate experimental and modeling framework is therefore essential for cell mechanics. In this study, a special atomic force microscope (AFM) with controlle
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