Kazan medical journalKazan medical journal0368-48142587-9359Eco-Vector6022910.17816/kazmj60229EditorialPneumococcal toxin and antitoxinR.P.info@eco-vector.com121019383410111111120702202107022021Copyright © 2021, R. P.2021<p>The author describes a method for obtaining pneumococcal toxin under aerobic conditions on ordinary veal broth with the addition of 0.1% of human blood. The author managed to concentrate this toxin by precipitating it with ammonium sulfate and to obtain a skin reaction similar to that of scarlet fever.</p>Kazan Medical archiveКазанский медицинский архив