Pencheva, M. and Manchorova_Veleva, N. 2024. REGULATORY MECHANISMS OF ANGIOTENSIN-CONVERTING ENZYME 2 AND THEIR SIGNIFICANCE IN THE DEVELOPMENT OF SEVERE COVID-19. PROBLEMS of Infectious and Parasitic Diseases. 51, 2 (Jan. 2024), 5–10. DOI:https://doi.org/10.58395/cvkyan65.