Vitamins and hormones
Analysis of the term "vitamin", its biochemical functions and health effects. Classification of deficiencies of vitamins. Pharmacology, history and etymology of vitamin. Analysis of the term "hormone", its biosynthesis, secretion and effects on the body.
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Analysis of available literary sources that highlight the issue of studying parasites and symbionts of river crayfish in water bodies of Ukraine and Europe. Identification of factors determining the dynamics of the number of crayfish in reservoirs.
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