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[Results of the work of the Russian Medical Academy of Continuous Professional Education Center for quality control of immunohistochemical studies for 2019-2021].

In 2019-2021 the Russian Medical Academy of Continuous Professional Education Center for quality control of immunohistochemical studies conducted rounds on the most used tumour markers of various localizations. The deficiencies in the conduct of immunohistochemical studies were identified and the importance of the participation of medical organizations in measures to improve the quality control of immunohistochemical studies in oncomorphology was shown.