Kazan medical journalKazan medical journal0368-48142587-9359Eco-Vector6106410.17816/kazmj61064Research ArticleHistochemical changes in lysosomes and mitochondria of the heart muscle in rheumatic heart diseasesMedvedevN. P.<p>Department of Hospital Surgery No. 2</p>info@eco-vector.comMedical Institute. S. V. Kurashova2911196849612141602202116022021Copyright © 1968, Medvedev N.P.1968<p>Studies by a number of authors have revealed significant changes in the activity of enzymes, as well as shifts in the content of nucleic acids and myocardial glycogen in disorders of its functions [5, 18, 19].</p>Kazan Medical archiveКазанский медицинский архив