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Kalyakulina A, Yusipov I, Kondakova E, Bacalini MG, Giuliani C, Sivtseva T, Semenov S, Ksenofontov A, Nikolaeva M, Khusnutdinova E, Zakharova R, Vedunova M, Franceschi C, Ivanchenko M. Epigenetics of the far northern Yakutian population. Clin Epigenetics 2023; 15:189. [PMID: 38053163 PMCID: PMC10699032 DOI: 10.1186/s13148-023-01600-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2023] [Accepted: 11/13/2023] [Indexed: 12/07/2023] Open
Abstract
BACKGROUND Yakuts are one of the indigenous populations of the subarctic and arctic territories of Siberia characterized by a continental subarctic climate with severe winters, with the regular January average temperature in the regional capital city of Yakutsk dipping below - 40 °C. The epigenetic mechanisms of adaptation to such ecologies and environments and, in particular, epigenetic age acceleration in the local population have not been studied before. RESULTS This work reports the first epigenetic study of the Yakutian population using whole-blood DNA methylation data, supplemented with the comparison to the residents of Central Russia. Gene set enrichment analysis revealed, among others, geographic region-specific differentially methylated regions associated with adaptation to climatic conditions (water consumption, digestive system regulation), aging processes (actin filament activity, cell fate), and both of them (channel activity, regulation of steroid and corticosteroid hormone secretion). Further, it is demonstrated that the epigenetic age acceleration of the Yakutian representatives is significantly higher than that of Central Russia counterparts. For both geographic regions, we showed that epigenetically males age faster than females, whereas no significant sex differences were found between the regions. CONCLUSIONS We performed the first study of the epigenetic data of the Yakutia cohort, paying special attention to region-specific features, aging processes, age acceleration, and sex specificity.
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Affiliation(s)
- Alena Kalyakulina
- Institute of Information Technologies, Mathematics and Mechanics, Lobachevsky State University, Nizhny Novgorod, 603022, Russia.
- Institute of Biogerontology, Lobachevsky State University, Nizhny Novgorod, 603022, Russia.
| | - Igor Yusipov
- Institute of Information Technologies, Mathematics and Mechanics, Lobachevsky State University, Nizhny Novgorod, 603022, Russia
- Institute of Biogerontology, Lobachevsky State University, Nizhny Novgorod, 603022, Russia
| | - Elena Kondakova
- Institute of Biogerontology, Lobachevsky State University, Nizhny Novgorod, 603022, Russia
- Institute of Biology and Biomedicine, Lobachevsky State University, Nizhny Novgorod, 603022, Russia
| | | | - Cristina Giuliani
- Laboratory of Molecular Anthropology and Centre for Genome Biology, Department of Biological, Geological and Environmental Sciences, University of Bologna, 40126, Bologna, Italy
| | - Tatiana Sivtseva
- Research Center of the Medical Institute of the North-Eastern Federal University M.K. Ammosova, Yakutsk, 677013, Russia
| | - Sergey Semenov
- Research Center of the Medical Institute of the North-Eastern Federal University M.K. Ammosova, Yakutsk, 677013, Russia
| | - Artem Ksenofontov
- State Budgetary Institution of the Republic of Sakha (Yakutia) Republican Center for Public Health and Medical Prevention, Yakutsk, 677001, Russia
| | - Maria Nikolaeva
- Research Center of the Medical Institute of the North-Eastern Federal University M.K. Ammosova, Yakutsk, 677013, Russia
| | - Elza Khusnutdinova
- Institute of Biochemistry and Genetics, Ufa Federal Research Centre of the Russian Academy of Sciences, Ufa, Russia, 450054
| | - Raisa Zakharova
- Research Center of the Medical Institute of the North-Eastern Federal University M.K. Ammosova, Yakutsk, 677013, Russia
| | - Maria Vedunova
- Institute of Biology and Biomedicine, Lobachevsky State University, Nizhny Novgorod, 603022, Russia
| | - Claudio Franceschi
- Institute of Information Technologies, Mathematics and Mechanics, Lobachevsky State University, Nizhny Novgorod, 603022, Russia
- Institute of Biogerontology, Lobachevsky State University, Nizhny Novgorod, 603022, Russia
| | - Mikhail Ivanchenko
- Institute of Information Technologies, Mathematics and Mechanics, Lobachevsky State University, Nizhny Novgorod, 603022, Russia
- Institute of Biogerontology, Lobachevsky State University, Nizhny Novgorod, 603022, Russia
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Chizhov K, Bragin Y, Sneve MK, Shandala N, Siegien K, Smith GM, Ksenofontov A, Kryanev A, Tesnov I, Koukhta B, Shimansky Y, Goncharenko G, Drozdovitch V, Kryuchkov V. Further development and application of a method for assessing radionuclide surface activity distribution and source location based on measurements of ambient dose equivalent rate. J Radiol Prot 2023; 43:041505. [PMID: 37797608 DOI: 10.1088/1361-6498/ad005b] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/22/2022] [Accepted: 10/05/2023] [Indexed: 10/07/2023]
Abstract
A method has been developed for solving the Fredholm equation in the barrier geometry for reconstructing the surface activity density (SAD) from the results of measuring the ambient dose equivalent rate (ADER). Inclusion of the barrier geometry means that the method takes into account the shielding effect of buildings and structures on the contaminated site. The method was based on the representation of the industrial site, buildings and radiation fields in the form of a raster and the use of the visibility matrix (VM) of raster cells to describe the barrier geometry. The developed method was applied to a hypothetical industrial site with a size of 200 × 200 conventional units for four types of SAD distribution over the surface of the industrial site: 'fragmentation', 'diffuse', 'uniform' and 'random'. The method of Lorentz curves was applied to estimate the compactness of the distributions of SAD and the ADER for the considered radiation sources. It was shown that the difference between the Lorentz curve for SAD and ADER means that the determination of the spatial distribution of SAD over the industrial site by solving the integral equation is essentially useful for determining the location of radiation source locations on the industrial site. The accuracy of SAD reconstruction depends on the following parameters: resolution (fragmentation) of the raster, the height of the radiation detector above the scanned surface, and the angular aperture of the radiation detector. The measurement of ADER is simpler and quicker than the direct measurement of SAD and its distribution. This represents a significant advantage if SAD distribution needs to be determined in areas with high radiation dose-rate during limited time. The developed method is useful for supporting radiation monitoring and optimizing the remediation of nuclear legacies, as well as during the recovery phase after a major accident.
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Affiliation(s)
- K Chizhov
- Joint Institute for Nuclear Research, Dubna, Russia
| | - Yu Bragin
- State Research Center-Burnasyan Federal Medical Biophysical Center of Federal Medical Biological Agency (SRC-FMBC), Moscow, Russia
| | - M K Sneve
- Norwegian Radiation and Nuclear Safety Authority, Østerås, Norway
| | - N Shandala
- State Research Center-Burnasyan Federal Medical Biophysical Center of Federal Medical Biological Agency (SRC-FMBC), Moscow, Russia
| | - K Siegien
- Norwegian Radiation and Nuclear Safety Authority, Østerås, Norway
| | - G M Smith
- GMS Abingdon Ltd, Abingdon, United Kingdom and Clemson University, Clemson, SC, United States of America
| | - A Ksenofontov
- National Research Nuclear University, Moscow, Russia
| | - A Kryanev
- National Research Nuclear University, Moscow, Russia
| | - I Tesnov
- State Research Center-Burnasyan Federal Medical Biophysical Center of Federal Medical Biological Agency (SRC-FMBC), Moscow, Russia
| | - B Koukhta
- Yu. A. Izrael Institute of Global Climate and Ecology, Moscow, Russia
| | - Yu Shimansky
- Northwest Center for Radioactive Waste Management (SevRAO) of the Federal State Unitary Enterprise 'Federal Environmental Operator', Murmansk, Russia
| | - G Goncharenko
- Northwest Center for Radioactive Waste Management (SevRAO) of the Federal State Unitary Enterprise 'Federal Environmental Operator', Murmansk, Russia
| | - V Drozdovitch
- Division of Cancer Epidemiology and Genetics, National Cancer Institute, NIH, DHHS, Bethesda, MD, United States of America
| | - V Kryuchkov
- State Research Center-Burnasyan Federal Medical Biophysical Center of Federal Medical Biological Agency (SRC-FMBC), Moscow, Russia
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Chizhov K, Bragin Y, Sneve MK, Shandala N, Seregin V, Siegien K, Smith GM, Ksenofontov A, Kryanev A, Tesnov I, Shimansky Y, Goncharenko G, Drozdovitch V, Kryuchkov V. Further development and application of a method for assessing radionuclide surface activity distribution and source location based on measurements of ambient dose equivalent rate. Examples for Andreeva Bay, Chernobyl NPP and Istiklol. J Radiol Prot 2023; 43:041506. [PMID: 37797613 DOI: 10.1088/1361-6498/ad005c] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/22/2022] [Accepted: 10/05/2023] [Indexed: 10/07/2023]
Abstract
A method for reconstructing surface activity density (SAD) maps based on the solution of the Fredholm equation has been developed and applied. The construction of SAD maps was carried out for the site of the temporary storage (STS) of spent fuel and radioactive waste (RW) in Andreeva Bay using the results of measuring campaign in 2001-2002 and for the sheltering construction of the solid RW using the results of measurements in 2021. The Fredholm equation was solved in two versions: under conditions of a barrier-free environment and taking into account buildings and structures located on the industrial site of the STS Andreeva Bay. Lorenz curves were generated to assess the compactness of the distributions of SAD and ambient dose equivalent rate (ADER) for the industrial site and the sheltering construction at STS Andreeva Bay, the area of the IV stage uranium tailing site near the city of Istiklol in the Republic of Tajikistan, and for roofs of the Chernobyl nuclear power plant. The nature of impact of the resolution (fragmentation) of the raster, the value of the radius of mutual influence of points (contamination sites), the height of the radiation detector above the scanned surface and the angular aperture of the radiation detector on the accuracy of the SAD reconstruction is shown. The method developed allows more accurate planning of decontamination work when only ADER measurements data is available. The proposed method can be applied to support the process of decontamination of radioactively contaminated territories, in particular during the remediation of the STS Andreeva Bay.
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Affiliation(s)
- K Chizhov
- Joint Institute for Nuclear Research, Dubna, Russia
| | - Yu Bragin
- State Research Center-Burnasyan Federal Medical Biophysical Center of Federal Medical Biological Agency (SRC-FMBC), Moscow, Russia
| | - M K Sneve
- Norwegian Radiation and Nuclear Safety Authority, Østerås, Norway
| | - N Shandala
- State Research Center-Burnasyan Federal Medical Biophysical Center of Federal Medical Biological Agency (SRC-FMBC), Moscow, Russia
| | - V Seregin
- State Research Center-Burnasyan Federal Medical Biophysical Center of Federal Medical Biological Agency (SRC-FMBC), Moscow, Russia
| | - K Siegien
- Norwegian Radiation and Nuclear Safety Authority, Østerås, Norway
| | - G M Smith
- GMS Abingdon Ltd, United Kingdom and Clemson University, Abingdon, SC, United States of America
| | - A Ksenofontov
- National Research Nuclear University, Moscow, Russia
| | - A Kryanev
- National Research Nuclear University, Moscow, Russia
| | - I Tesnov
- State Research Center-Burnasyan Federal Medical Biophysical Center of Federal Medical Biological Agency (SRC-FMBC), Moscow, Russia
| | - Yu Shimansky
- Northwest Center for Radioactive Waste Management (SevRAO) of the Federal State Unitary Enterprise 'Federal Environmental Operator', Murmansk, Russia
| | - G Goncharenko
- Northwest Center for Radioactive Waste Management (SevRAO) of the Federal State Unitary Enterprise 'Federal Environmental Operator', Murmansk, Russia
| | - V Drozdovitch
- Division of Cancer Epidemiology and Genetics, National Cancer Institute, NIH, DHHS, Bethesda, MD, United States of America
| | - V Kryuchkov
- State Research Center-Burnasyan Federal Medical Biophysical Center of Federal Medical Biological Agency (SRC-FMBC), Moscow, Russia
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Bragin Y, Chizhov K, Sneve MK, Tsovyanov A, Shandala N, Siegien K, Smith GM, Tesnov I, Krasnoschekov A, Ksenofontov A, Kryanev A, Drozdovitch V, Kryuchkov V. Topographical classification of dose distributions: implications for control for worker exposure. J Radiol Prot 2020; 40:410-430. [PMID: 31968313 PMCID: PMC9426295 DOI: 10.1088/1361-6498/ab6ee3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
This paper deals with classification of dose distributions of nuclear workers based on antikurtosis (Q) and entropy coefficients (K) and their relationship presented in QK-diagrams. It is shown that determination of the most appropriate distribution to adopt, for a specific data set of a wide range of input data, requires building and analysing QK-diagrams for distributions of logarithms of individual doses. Actual dose distributions for emergency and occupational exposure situations were then considered, as well as doses for one day of work during clean-up and routine activities. It is shown that, in all cases, three types of distributions of logarithms of individual doses were present: normal, Weibull and Chapeau. The location of the representation point of a dose distribution reflects the degree of dose control of the group of workers whose individual doses are collectively displayed in the QK-diagram. The more the representation point of the analysed distribution of the logarithms of the individual dose of a given contingent of workers deviates from the point of the lognormal distribution, the more there was intervention in the process of individual dose accumulation. Thus, QK-diagrams could be used to develop a dose control function. It is shown that the hybrid lognormal distribution, which is widely used in the field of radiation safety, for the purpose of approximation of real dose distributions, is unable to satisfactorily describe many dose distributions arising in aftermath operations and occupational exposure.
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Affiliation(s)
- Yu Bragin
- State Research Center—Burnasyan Federal Medical Biophysical Center of Federal Medical Biological Agency (SRC–FMBC), 123098, Zhivopisnaya st. 46, Moscow, Russia
| | - K Chizhov
- State Research Center—Burnasyan Federal Medical Biophysical Center of Federal Medical Biological Agency (SRC–FMBC), 123098, Zhivopisnaya st. 46, Moscow, Russia
- Division of Cancer Epidemiology and Genetics, National Cancer Institute, 9609 Medical Center Drive, Rockville, MD, 20850, United States of America
| | - M K Sneve
- Norwegian Radiation and Nuclear Safety Authority, Postboks 55, 1332 Østerås, Norway
| | - A Tsovyanov
- State Research Center—Burnasyan Federal Medical Biophysical Center of Federal Medical Biological Agency (SRC–FMBC), 123098, Zhivopisnaya st. 46, Moscow, Russia
| | - N Shandala
- State Research Center—Burnasyan Federal Medical Biophysical Center of Federal Medical Biological Agency (SRC–FMBC), 123098, Zhivopisnaya st. 46, Moscow, Russia
| | - K Siegien
- Norwegian Radiation and Nuclear Safety Authority, Postboks 55, 1332 Østerås, Norway
| | - G M Smith
- GMS Abingdon Ltd, Tamarisk, Radley Road, Abingdon, OX14 3PP, United Kingdom
| | - I Tesnov
- State Research Center—Burnasyan Federal Medical Biophysical Center of Federal Medical Biological Agency (SRC–FMBC), 123098, Zhivopisnaya st. 46, Moscow, Russia
| | - A Krasnoschekov
- Northwest Center for Radioactive Waste Management (SevRAO), a Branch of the Federal State Unitary Enterprise ‘Enterprise for Radioactive Waste Management’ RosRAO, 183017, Lobova st. 100, Murmansk, Russia
| | - A Ksenofontov
- National Research Nuclear University ‘MEPhI’, 115409 Kashirskoye Shosse, 31, Moscow, Russia
| | - A Kryanev
- National Research Nuclear University ‘MEPhI’, 115409 Kashirskoye Shosse, 31, Moscow, Russia
| | - V Drozdovitch
- Division of Cancer Epidemiology and Genetics, National Cancer Institute, 9609 Medical Center Drive, Rockville, MD, 20850, United States of America
| | - V Kryuchkov
- State Research Center—Burnasyan Federal Medical Biophysical Center of Federal Medical Biological Agency (SRC–FMBC), 123098, Zhivopisnaya st. 46, Moscow, Russia
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Chizhov K, Yu B, Sneve MK, Shandala N, Siegien K, Smith GM, Ksenofontov A, Kryanev A, Mark NK, Szöke I, Tesnov I, Krasnoschekov A, Kosnikov A, Drozdovitch V, Chumak V, Kryuchkov V. The development and application of a method for assessing radionuclide surface contamination density based on measurements of ambient dose equivalent rate. J Radiol Prot 2019; 39:354-372. [PMID: 30695756 PMCID: PMC9437908 DOI: 10.1088/1361-6498/ab02aa] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
This article presents a method for assessing the radionuclide surface contamination density (SCD) on open sites and in premises of a radiation hazardous facility based on measurements of the ambient dose equivalent rate (ADER). The method is intended for use at the initial stage of the assessment of the radiation environment at facilities. The assessed SCD at a given location on the surface can differ from the directly measured SCD at that location, since sources located on the surface and distributed by the depth contribute to the ADER value. The method makes it possible to estimate SCD with reasonable accuracy without increasing the number of measurements, and thus avoid additional occupational exposure and the use of additional resources. SCD and ADER as spatial variables have different support of measurement data. For ADER, measured at a height of 1 m, the support of measurement data can be taken to be a circle in the centre of which a gamma-ray detector is located, with a radius of several tens of meters. In contrast, SCD has the support of measurement data, close to the overall dimensions of the beta detector (100 cm2). To solve the problem of SCD calculation on the basis of ADER measurements, the method of conversion coefficients (MCC) is usually applied, based on the use of conversion factors; however, this method provides an adequate estimate only under conditions of an SCD with low gradient over the surface. The method proposed in this article is applicable for an arbitrary distribution of SCD, and designed to deal with heterogeneous contamination patterns. The developed method is based on the numerical solution of the Fredholm equation of the first kind. The measurement data always contain an error, therefore, the task of the SCD calculation is an ill-posed problem, and the Tikhonov regularisation method (ridge regression) was used to solve it. The article presents the method developed and examples of use. Validation of the method was performed using 38 measurements of the radioactive contamination from 137Cs in soil. It is shown that the method proposed in the article demonstrates a significant superiority in comparison with the MCC method, because it allows more accurate localisation of areas contaminated with radionuclides and is applicable for an arbitrary distribution of SCD.
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Affiliation(s)
- K Chizhov
- State Research Center—Burnasyan Federal Medical Biophysical Center of Federal Medical Biological Agency (SRC–FMBC), 123182, Zhivopisnaya st. 46, Moscow, Russia
| | - Bragin Yu
- State Research Center—Burnasyan Federal Medical Biophysical Center of Federal Medical Biological Agency (SRC–FMBC), 123182, Zhivopisnaya st. 46, Moscow, Russia
| | - M K Sneve
- Norwegian Radiation Protection Authority, Postboks 55, NO-1332 Østerås, Norway
| | - N Shandala
- State Research Center—Burnasyan Federal Medical Biophysical Center of Federal Medical Biological Agency (SRC–FMBC), 123182, Zhivopisnaya st. 46, Moscow, Russia
| | - K Siegien
- Norwegian Radiation Protection Authority, Postboks 55, NO-1332 Østerås, Norway
| | - G M Smith
- GMS Abingdon Ltd, Tamarisk, Radley Road, Abingdon, OX14 3PP, United Kingdom
| | - A Ksenofontov
- National Research Nuclear University ‘MEPhI’, 115409 Kashirskoye shosse, 31, Moscow, Russia
| | - A Kryanev
- National Research Nuclear University ‘MEPhI’, 115409 Kashirskoye shosse, 31, Moscow, Russia
| | - N-K Mark
- Institute for Energy Technology, Os Alle 5, NO-1777, Halden, Norway
| | - I Szöke
- Institute for Energy Technology, Os Alle 5, NO-1777, Halden, Norway
| | - I Tesnov
- State Research Center—Burnasyan Federal Medical Biophysical Center of Federal Medical Biological Agency (SRC–FMBC), 123182, Zhivopisnaya st. 46, Moscow, Russia
| | - A Krasnoschekov
- Northwest Center for Radioactive Waste Management (SevRAO), a Branch of the Federal State Unitary Enterprise ‘Enterprise for Radioactive Waste Management’ RosRAO, 183017, Lobova st. 100, Murmansk, Russia
| | - A Kosnikov
- Northwest Center for Radioactive Waste Management (SevRAO), a Branch of the Federal State Unitary Enterprise ‘Enterprise for Radioactive Waste Management’ RosRAO, 183017, Lobova st. 100, Murmansk, Russia
| | - V Drozdovitch
- Division of Cancer Epidemiology and Genetics, National Cancer Institute, 9609 Medical Center Drive, Rockville, MD, 20850, United States of America
| | - V Chumak
- National Research Centre for Radiation Medicine, Melnykov str. 53, Kyiv, 04050, Ukraine
| | - V Kryuchkov
- State Research Center—Burnasyan Federal Medical Biophysical Center of Federal Medical Biological Agency (SRC–FMBC), 123182, Zhivopisnaya st. 46, Moscow, Russia
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Radyukhin V, Fedorova N, Ksenofontov A, Serebryakova M, Baratova L. Cold co-extraction of hemagglutinin and matrix M1 protein from influenza virus A by a combination of non-ionic detergents allows for visualization of the raft-like nature of the virus envelope. Arch Virol 2008; 153:1977-80. [PMID: 18825482 DOI: 10.1007/s00705-008-0214-7] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2008] [Accepted: 09/05/2008] [Indexed: 11/29/2022]
Abstract
Membrane solubilization with a mixture of cold non-ionic detergents has been applied to isolate detergent-resistant membranes from intact virus A lipid bilayer. Association of the viral envelope glycoproteins and M1 into a raft lipid-protein complex was verified via detergent insolubility experiments, and the M1:HA stoichiometry of the proposed supramolecular complex was estimated via amino acid analysis. Electron microscopy and dynamic light scattering data revealed that these lipid-protein rafts form unilamellar vesicles with HA spikes on their surfaces similar to influenza virus virions. Together, our data suggest that the cold co-extraction technique visualizes the raft-like nature of the viral envelope and demonstrates the interaction of matrix M1 protein with the envelope.
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Affiliation(s)
- V Radyukhin
- Department of Chromatography, AN Belozersky Institute of Physico-Chemical Biology, Moscow State University, Leninskie Gory, Moscow, Russia.
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