The study biochemical indicates of blood rats at conditions acute hypoxia Serik Abdreshov, Sultan Tuleukhanov, Gulshat Atanbaeva, Nazym Issayeva and Ainur Zhumabayeva E3S Web Conf., 159 (2020) 08003 Published online: 24 March 2020 DOI: 10.1051/e3sconf/202015908003