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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">vestim</journal-id><journal-title-group><journal-title xml:lang="ru">Известия Национальной  академии наук Беларуси. Серия медицинских наук</journal-title><trans-title-group xml:lang="en"><trans-title>Proceedings of the National Academy of Sciences of Belarus, Medical series</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">1814-6023</issn><issn pub-type="epub">2524-2350</issn><publisher><publisher-name>The Republican Unitary Enterprise Publishing House "Belaruskaya Navuka"</publisher-name></publisher></journal-meta><article-meta><article-id custom-type="elpub" pub-id-type="custom">vestim-239</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>КЛИНИЧЕСКАЯ И ЭКСПЕРИМЕНТАЛЬНАЯ МЕДИЦИНА</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>CLINICAL AND EXPERIMENTAL MEDICINE</subject></subj-group></article-categories><title-group><article-title>Патоморфологическая характеристика экспериментальной карциномы легкого Льюис при коррекции конкурентами фолиевой кислоты</article-title><trans-title-group xml:lang="en"><trans-title>Pathomorphological characteristic of experimental Lewis lung carcinoma at correction by competitors of folic acid</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>Демидчик</surname><given-names>Ю. Е.</given-names></name><name name-style="western" xml:lang="en"><surname>Demidchik</surname><given-names>Yu. E.</given-names></name></name-alternatives><email xlink:type="simple">yu.demidchik@gmail.com</email><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Владимирская</surname><given-names>Т. Е.</given-names></name><name name-style="western" xml:lang="en"><surname>Vladimirskaya</surname><given-names>T. E.</given-names></name></name-alternatives><email xlink:type="simple">noemail@neicon.ru</email><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Шерстюк</surname><given-names>Г. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Sherstiuk</surname><given-names>G. V.</given-names></name></name-alternatives><email xlink:type="simple">noemail@neicon.ru</email><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Бычков</surname><given-names>В. М.</given-names></name><name name-style="western" xml:lang="en"><surname>Bychkov</surname><given-names>V. M.</given-names></name></name-alternatives><email xlink:type="simple">noemail@neicon.ru</email><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Станкевич</surname><given-names>С. И.</given-names></name><name name-style="western" xml:lang="en"><surname>Stankevich</surname><given-names>S. I.</given-names></name></name-alternatives><email xlink:type="simple">noemail@neicon.ru</email><xref ref-type="aff" rid="aff-1"/></contrib></contrib-group><aff xml:lang="ru" id="aff-1"><institution>Белорусская медицинская академия последипломного образования</institution><country>Belarus</country></aff><pub-date pub-type="collection"><year>2015</year></pub-date><pub-date pub-type="epub"><day>06</day><month>06</month><year>2016</year></pub-date><volume>0</volume><issue>2</issue><fpage>5</fpage><lpage>9</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Демидчик Ю.Е., Владимирская Т.Е., Шерстюк Г.В., Бычков В.М., Станкевич С.И., 2016</copyright-statement><copyright-year>2016</copyright-year><copyright-holder xml:lang="ru">Демидчик Ю.Е., Владимирская Т.Е., Шерстюк Г.В., Бычков В.М., Станкевич С.И.</copyright-holder><copyright-holder xml:lang="en">Demidchik Y.E., Vladimirskaya T.E., Sherstiuk G.V., Bychkov V.M., Stankevich S.I.</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://vestimed.belnauka.by/jour/article/view/239">https://vestimed.belnauka.by/jour/article/view/239</self-uri><abstract><p>При исследовании эффективности локального и обширного воздействия конкурентов фолиевой кислоты на перевиваемую карциному Льюис (80 тыс. клеток в растворе Хенкса) у мышей-самцов линии С57B1/6j массой тела 22-28 г установлено, что 320 мг/кг 3-(пара-аминобензол-сульфамидо)-5-метилизоксазола и 64 мг/кг 2,4-диамино-5-(3,4,5-метоксибензил)-пиримидина обладают определенным терапевтическим эффектом. Механизм действия обусловлен как цитотоксическим влиянием на опухолевые клетки, так и снижением уровня их пролиферации. Заметного повреждающего эффекта на окружающие неопухолевые клетки не выявлено.</p></abstract><trans-abstract xml:lang="en"><p>When studying the efficiency of impact of folic acid competitors on intertwined Lewis carcinoma in experimental animals, it is established that 3-(couple-aminobenzene-sulfamido)-5-metilizoksazol and 2,4-diamino-5-(3,4,5-metoksibenzyl)-pyrimidine have a certain therapeutic effect. The mechanism of action consists both of the cytotoxic influence on tumor cells and of a decrease in the level of their proliferation. The noticeable damaging effect on surrounding non-neoplastic cells is not registered.</p></trans-abstract></article-meta></front><back><ref-list><title>References</title><ref id="cit1"><label>1</label><citation-alternatives><mixed-citation xml:lang="ru">Чиссов В. И. // Мед. вестн. 2010. № 8. 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