Kazan medical journalKazan medical journal0368-48142587-9359Eco-Vector4704610.17816/kazmj47046MiscellaneousR. G. Pirone. On the issue of neurolysins. Archiv Biolog. Sciences. Volume X, No. 10903190333-41501501610202016102020Copyright © 2020, Board E.2020<p>Like Delezenne, the author succeeded in obtaining a neurolytic serum by immunizing ducks with an emulsion prepared from the brain and spinal cord of a dog. During his experiments, by the way, it turned out that the specificity of the serum pretty soon (20-28 days of the last injection) disappears. With regard to histological studies, the author notes the changes in the brain 1) with injections of normal duck serum, 2) with injections of neurolytic serum, and 3) changes in the pieces of the brain during the direct action of both serum on them in vitro.</p>Kazan Medical archiveКазанский медицинский архив