Kazan medical journalKazan medical journal0368-48142587-9359Eco-Vector7647110.17816/kazmj76471Research ArticleDetermination of sex in humans, animals and plants by a chemical reaction of blood (Medical Gaz., 1923, No. 15, 21 | 22)BlumsteinZ.info@eco-vector.com150319242033203212407202124072021Copyright © 2021, Blumstein Z.2021<p>After many years of research, Manoilov (Vrachebn. Gaz., 1923, No. 15, 21 | 22) managed to establish the 3 most typical reactions. M. especially recommends the third modification, with the help of which he investigated 530 samples of male and female blood and obtained from 86 to 36% of correct answers.</p>Kazan Medical archiveКазанский медицинский архив