Kazan medical journalKazan medical journal0368-48142587-9359Eco-Vector7681510.17816/kazmj76815Research ArticleTo serodiagnosis of syphilis Shtiden (Br. Delo, 1924, No. 10)G.V.info@eco-vector.com150719242066476482707202127072021Copyright © 2021, G. V.2021<p>Stiden (Bp. Delo, 1924, No. 10) of all sedimentary reactions proposed for the diagnosis of syphilis, especially recommends the Kahn reaction, which, on the one hand, is distinguished by the simplicity of technical implementation, and on the other hand, it is not inferior in accuracy and sensitivity to the Wassermann reaction. a The main extract for this reaction is prepared in the following way: a fresh cow heart turns into a cutlet mass, dried in a thermostat at 37 in open Petri cups and passed several times through a coffee mill, after which it is ground in a mortar into a fine powder</p>Kazan Medical archiveКазанский медицинский архив