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The structure of the nephron. Filtration of blood plasma and formation of primary urine. Reabsorption (reabsorption) and formation of secondary urine. Comparison of the physiological mechanism of the stages of urine formation. For students of grades 8 - 11, preparation for the OGE, USE, biology olympiads, for all biology lovers. Galashev Roman Nikolaevich, teacher, tutor, popularizer of biology. [email protected] Telegram, W.App +79195027195 vk.com/...c206939258 - biology in questions and answers