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<article article-type="research-article" dtd-version="1.3" 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" xml:lang="ru"><front><journal-meta><journal-id journal-id-type="publisher-id">scbmt</journal-id><journal-title-group><journal-title xml:lang="ru">БИОМЕДИЦИНА</journal-title><trans-title-group xml:lang="en"><trans-title>Journal Biomed</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">2074-5982</issn><issn pub-type="epub">2713-0428</issn><publisher><publisher-name>Scientific center of biomedical technologies of Federal Medical and Biological Agency</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="doi">10.33647/2074-5982-20-4-78-86</article-id><article-id custom-type="elpub" pub-id-type="custom">scbmt-1675</article-id><article-categories><subj-group subj-group-type="heading"><subject>Research Article</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="ru"><subject>ДОКЛИНИЧЕСКИЕ ИССЛЕДОВАНИЯ В БИОМЕДИЦИНЕ</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>NON-CLINICAL RESEARCH IN BIOMEDICINE</subject></subj-group></article-categories><title-group><article-title>Оценка влияния этилкарбамата на СD21+-клетки селезёнки</article-title><trans-title-group xml:lang="en"><trans-title>Evaluation of the Effect of Ethyl Carbamate on CD21+-Spleen Cells</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Самакина</surname><given-names>Е. С.</given-names></name><name name-style="western" xml:lang="en"><surname>Samakina</surname><given-names>E S.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Самакина Екатерина Станиславовна</p><p>428015, Чувашская Республика, Чебоксары, Московский пр-кт, 15</p></bio><bio xml:lang="en"><p>Ekaterina S. Samakina</p><p>428015, Chuvash Republic, Cheboksary, Moskovsky Ave., 15</p></bio><email xlink:type="simple">ekaterina1996.96@mail.ru</email><xref ref-type="aff" rid="aff-1"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>ФГБОУ ВО «Чувашский государственный университет им. И.Н. Ульянова»</institution><country>Россия</country></aff><aff xml:lang="en"><institution>I.N. Ulianov Chuvash State University</institution><country>Russian Federation</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2024</year></pub-date><pub-date pub-type="epub"><day>10</day><month>12</month><year>2024</year></pub-date><volume>20</volume><issue>4</issue><fpage>78</fpage><lpage>86</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Самакина Е.С., 2024</copyright-statement><copyright-year>2024</copyright-year><copyright-holder xml:lang="ru">Самакина Е.С.</copyright-holder><copyright-holder xml:lang="en">Samakina E.S.</copyright-holder><license xml:lang="ru" license-type="creative-commons-attribution" xlink:href="https://creativecommons.org/licenses/by/4.0/" xlink:type="simple"><license-p>Данная работа распространяется под лицензией Creative Commons Attribution 4.0.</license-p></license><license xml:lang="en" license-type="creative-commons-attribution" xlink:href="https://creativecommons.org/licenses/by/4.0/" xlink:type="simple"><license-p>This work is licensed under a Creative Commons Attribution 4.0 License.</license-p></license></permissions><self-uri xlink:href="https://journal.scbmt.ru/jour/article/view/1675">https://journal.scbmt.ru/jour/article/view/1675</self-uri><abstract><p>Селезёнка — один из органов иммунной системы, участвующий в В-клеточном иммунном ответе, в котором локализуются наивные и зрелые В-лимфоциты в определённых зонах. При уменьшении В-клеток в кровотоке селезёнка восполняет их количество. В данном органе происходит образование антител, которые являются важным звеном в гуморальном иммунном ответе. В ходе эксперимента выявлено, что однократное введение этилкарбамата вызывает изменения и в лёгких, и в селезёнке. При анализе гистологических срезов через 6 мес. после поступления этилкарбамата в селезёнке имеются признаки инволюции белой пульпы, уменьшается количество СD21+-клеток, что свидетельствует об угнетении В-клеточного иммунного ответа и, вероятно, о снижении гуморального иммунного ответа.</p></abstract><trans-abstract xml:lang="en"><p>The spleen is an organ of the immune system that is involved in the B-cell immune response. In certain areas of the spleen, naive and mature B lymphocytes are localized. Upon a decrease in B cells in the bloodstream, the spleen replenishes their number. In this organ, antibodies are formed, which are an important link in the humoral immune response. The conducted experiment revealed that a single administration of ethyl carbamate causes changes in both the lungs and the spleen. An analysis of histological sections showed that, six months after the receipt of ethyl carbamate, the spleen showed signs of white pulp involution, along with a decrease in the number of CD21+ cells. This indicates an inhibition of the B-cell immune response and a probable decrease in the humoral immune response.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>этилкарбамат</kwd><kwd>селезёнка</kwd><kwd>количество CD21+-клеток</kwd></kwd-group><kwd-group xml:lang="en"><kwd>ethyl carbamate</kwd><kwd>spleen</kwd><kwd>number of CD21+-cells</kwd></kwd-group></article-meta></front><back><ref-list><title>References</title><ref id="cit1"><label>1</label><citation-alternatives><mixed-citation xml:lang="ru">Арлашкина О.М., Стручко Г.Ю., Меркулова Л.М., Михайлова М.Н. 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