Study of the correlation between toxic, essential and macronutrients in the blood serum of stud horsesValery Kalashnikov, Mikhail Atroshchenko, Alina Sinyakina, Natalya Frolova and Olga ShirokovaBIO Web Conf., 36 (2021) 06030DOI: https://doi.org/10.1051/bioconf/20213606030