Innovative method for determining the activity of gonadotropic raw materials in the production of the biological preparation of PMSKaliya Yerkekulova, Nuradin Alibaev, Oralbek Alikhanov and Orinbek BeketauovE3S Web Conf., 474 (2024) 03018DOI: https://doi.org/10.1051/e3sconf/202447403018