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<article xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:ali="http://www.niso.org/schemas/ali/1.0/" article-type="research-article" dtd-version="1.2" xml:lang="en"><front><journal-meta><journal-id journal-id-type="publisher-id">Pediatric Hematology/Oncology and Immunopathology</journal-id><journal-title-group><journal-title xml:lang="en">Pediatric Hematology/Oncology and Immunopathology</journal-title><trans-title-group xml:lang="ru"><trans-title>Вопросы гематологии/онкологии и иммунопатологии в педиатрии</trans-title></trans-title-group></journal-title-group><issn publication-format="print">1726-1708</issn><issn publication-format="electronic">2414-9314</issn><publisher><publisher-name xml:lang="en">Fund Doctors, Innovations, Science for Children</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="publisher-id">1019</article-id><article-id pub-id-type="doi">10.24287/1726-1708-2025-24-2-104-110</article-id><article-id pub-id-type="edn">PWYNRG</article-id><article-categories><subj-group subj-group-type="toc-heading" xml:lang="en"><subject>ORIGINAL ARTICLES</subject></subj-group><subj-group subj-group-type="toc-heading" xml:lang="ru"><subject>ОРИГИНАЛЬНЫЕ СТАТЬИ</subject></subj-group><subj-group subj-group-type="article-type"><subject>Research Article</subject></subj-group></article-categories><title-group><article-title xml:lang="en">Detection of phosphatidylserine-expressing red blood cells in whole blood</article-title><trans-title-group xml:lang="ru"><trans-title>Детекция фосфатидилсерин-экспрессирующих эритроцитов в цельной крови</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0003-0625-1743</contrib-id><name-alternatives><name xml:lang="en"><surname>Chabin</surname><given-names>Ivan A.</given-names></name><name xml:lang="ru"><surname>Чабин</surname><given-names>Иван Андреевич</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><email>ivan.chabin@dgoi.ru</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0001-8013-1112</contrib-id><name-alternatives><name xml:lang="en"><surname>Podoplelova</surname><given-names>N. A.</given-names></name><name xml:lang="ru"><surname>Подоплелова</surname><given-names>Надежда Александровна</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><email>podoplelovan@yandex.ru</email><xref ref-type="aff" rid="aff1"/><xref ref-type="aff" rid="aff2"/></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0003-0167-6726</contrib-id><name-alternatives><name xml:lang="en"><surname>Koltsova</surname><given-names>Ekaterina M.</given-names></name><name xml:lang="ru"><surname>Кольцова</surname><given-names>Екатерина Михайловна</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><email>ekaterina_koltsova@bk.ru</email><xref ref-type="aff" rid="aff1"/><xref ref-type="aff" rid="aff2"/></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-4664-6953</contrib-id><name-alternatives><name xml:lang="en"><surname>Butov</surname><given-names>Kirill R.</given-names></name><name xml:lang="ru"><surname>Бутов</surname><given-names>Кирилл Романович</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><email>no-reply@eco-vector.ru</email><xref ref-type="aff" rid="aff1"/><xref ref-type="aff" rid="aff2"/><xref ref-type="aff" rid="aff3"/></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-2930-8768</contrib-id><name-alternatives><name xml:lang="en"><surname>Obydennyi</surname><given-names>Sergei I.</given-names></name><name xml:lang="ru"><surname>Обыденный</surname><given-names>Сергей Иванович</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><email>obydennyj@physics.msu.ru</email><xref ref-type="aff" rid="aff1"/><xref ref-type="aff" rid="aff2"/></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0003-2756-7325</contrib-id><name-alternatives><name xml:lang="en"><surname>Smetanina</surname><given-names>Nataliya S.</given-names></name><name xml:lang="ru"><surname>Сметанина</surname><given-names>Наталия Сергеевна</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>MD, Dr. Sci. (Medicine), Professor</p></bio><bio xml:lang="ru"><p>д-р мед. наук, профессор</p></bio><email>Nataliya.Smetanina@dgoi.ru</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-8128-7757</contrib-id><name-alternatives><name xml:lang="en"><surname>Panteleev</surname><given-names>Mikhail A.</given-names></name><name xml:lang="ru"><surname>Пантелеев</surname><given-names>Михаил Александрович</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>Corresponding Member of the RAS, Dr. Sci. (Physics and Mathematics), Professor</p></bio><bio xml:lang="ru"><p>член-корр. РАН, д-р физ.-мат. наук, профессор</p></bio><email>mapanteleev@yandex.ru</email><xref ref-type="aff" rid="aff1"/><xref ref-type="aff" rid="aff2"/><xref ref-type="aff" rid="aff4"/></contrib></contrib-group><aff-alternatives id="aff1"><aff><institution xml:lang="en">Dmitry Rogachev National Medical Research Center of Pediatric Hematology, Oncology and Immunology</institution></aff><aff><institution xml:lang="ru">ФГБУ «Национальный медицинский исследовательский центр детской гематологии, онкологии и иммунологии им. Дмитрия Рогачева» Минздрава России</institution></aff></aff-alternatives><aff-alternatives id="aff2"><aff><institution xml:lang="en">Center for Theoretical Problems of Physical and Chemical Pharmacology, Russian Academy of Sciences</institution></aff><aff><institution xml:lang="ru">ФГБУН «Центр теоретических проблем физико-химической фармакологии» РАН</institution></aff></aff-alternatives><aff-alternatives id="aff3"><aff><institution xml:lang="en">Pirogov Russian National Research Medical University</institution></aff><aff><institution xml:lang="ru">ФГАОУ ВО «Российский национальный исследовательский медицинский университет им. Н.И. Пирогова» Минздрава России</institution></aff></aff-alternatives><aff-alternatives id="aff4"><aff><institution xml:lang="en">Lomonosov Moscow State University, Moscow</institution></aff><aff><institution xml:lang="ru">ФГБОУ ВО «Московский государственный университет им. М.В. Ломоносова»</institution></aff></aff-alternatives><pub-date date-type="preprint" iso-8601-date="2025-09-08" publication-format="electronic"><day>08</day><month>09</month><year>2025</year></pub-date><pub-date date-type="pub" iso-8601-date="2025-06-30" publication-format="electronic"><day>30</day><month>06</month><year>2025</year></pub-date><volume>24</volume><issue>2</issue><issue-title xml:lang="en"/><issue-title xml:lang="ru"/><fpage>104</fpage><lpage>110</lpage><history><date date-type="received" iso-8601-date="2025-09-08"><day>08</day><month>09</month><year>2025</year></date><date date-type="accepted" iso-8601-date="2025-09-08"><day>08</day><month>09</month><year>2025</year></date></history><permissions><copyright-statement xml:lang="en">Copyright ©; 2025, «D. Rogachev NMRCPHOI»</copyright-statement><copyright-statement xml:lang="ru">Copyright ©; 2025, ФГБУ «НМИЦ ДГОИ им. Дмитрия Рогачева» Минздрава России</copyright-statement><copyright-year>2025</copyright-year><copyright-holder xml:lang="en">«D. Rogachev NMRCPHOI»</copyright-holder><copyright-holder xml:lang="ru">ФГБУ «НМИЦ ДГОИ им. Дмитрия Рогачева» Минздрава России</copyright-holder><ali:free_to_read xmlns:ali="http://www.niso.org/schemas/ali/1.0/"/><license><ali:license_ref xmlns:ali="http://www.niso.org/schemas/ali/1.0/">https://creativecommons.org/licenses/by/4.0</ali:license_ref></license></permissions><self-uri xlink:href="https://hemoncim.com/jour/article/view/1019">https://hemoncim.com/jour/article/view/1019</self-uri><abstract xml:lang="en"><p>There are various mechanisms of red blood cell (RBC) clearance from the circulation, including eryptosis and hemolysis. The spleen plays a major role in eliminating RBCs from the blood flow thanks to their ability to pass through narrow spaces. Still, some questions such as the role of phosphatidylserine-binding proteins in this process remain unanswered. Thus, RBC elimination mechanisms are still not very well explored. Here, we report on a flow cytometry protocol using phosphatidylserine markers for the detection of whole blood erythrocytes that can be classified as pre-elimination RBCs. We also provide the results of healthy donors' blood testing suggesting that reliable detection of eryptosis in whole blood is indeed possible. The study was approved by the Independent Ethics Committee and the Scientific Council of the Dmitry Rogachev National Medical Research Center of Pediatric Hematology, Oncology and Immunology of Ministry of Healthcare of Russia.</p></abstract><trans-abstract xml:lang="ru"><p>Механизмы клиренса эритроцитов из кровотока разнообразны и могут включать такие процессы, как эриптоз и гемолиз. При этом несомненна роль селезенки, которая удаляет эритроциты из кровотока в связи с их способностью проходить сквозь узкие пространства, однако отдельные аспекты, такие как роль белков в этом процессе, которые могут связывать фосфатидилсерин, продолжают вызывать вопросы. Таким образом, точные механизмы элиминации эритроцитов до сих пор не установлены. В данной работе приведен цитофлуориметрический протокол детекции эритроцитов цельной крови, которые могут быть отнесены к предэлиминационной стадии, с использованием маркеров фосфатидилсерина. Также представлены результаты анализа крови здоровых доноров, которые позволяют говорить о возможности надежной детекции эриптоза в цельной крови. Настоящее исследование одобрено независимым этическим комитетом и утверждено решением ученого совета ФГБУ «НМИЦ ДГОИ им. Дмитрия Рогачева» Минздрава России.</p></trans-abstract><kwd-group xml:lang="en"><kwd>red blood cells</kwd><kwd>cell death</kwd><kwd>eryptosis</kwd><kwd>flow cytometry</kwd></kwd-group><kwd-group xml:lang="ru"><kwd>эритроциты</kwd><kwd>клеточная смерть</kwd><kwd>эриптоз</kwd><kwd>проточная цитофлуориметрия</kwd></kwd-group><funding-group><award-group><funding-source><institution-wrap><institution xml:lang="ru">Российский научный фонд</institution></institution-wrap><institution-wrap><institution xml:lang="en">Russian Science Foundation</institution></institution-wrap></funding-source><award-id>23-75-10120</award-id></award-group></funding-group></article-meta></front><body></body><back><ref-list><ref id="B1"><label>1.</label><citation-alternatives><mixed-citation xml:lang="en">Ataullakhanov F.I., Borsakova D.V., Protasov E.S., Sin- auridze E.I., Zeynalov A.M. Erythro¬cyte: а bag with hemoglobin, or a living active cell? 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