CLONING OF THE MAJOR OPEN READING FRAMES OF SARS-COV-2, THEIR EXPRESSION IN ESСHERICHIA COLI AND PURIFICATION OF SARS-S-6HIS, SARS-S1-6HIS, SARS-N-6HIS, SARS-M-6HIS AND SARS-E-6HIS PROTEINS. EB [Internet]. 2023 Mar. 20 [cited 2026 Jul. 23];94(1):90-9. Available from: https://bb.kaznu.kz/index.php/biology/article/view/1712