Kazan medical journalKazan medical journal0368-48142587-9359Eco-Vector7647010.17816/kazmj76470Research ArticleNew in the biology of Ascaris (their wandering)LuriaR.info@eco-vector.com150319242033193202407202124072021Copyright © 2021, Luria R.2021<p>The cycle of ascaris development and the mechanism of human infection with them, established back in 1887 by Grassi, and their eggs entering the stomach develop into mature sexual forms in the intestine, were considered facts that were completely clarified and did not require further research.</p>Kazan Medical archiveКазанский медицинский архив