Prokaryotic Expression, Purification and Immunogenicity in Rabbits of the Small Antigen of Hepatitis Delta Virus oleh Vera L. Tunitskaya, Olesja V. Eliseeva, Vladimir T. Valuev-Elliston, Daria A. Tyurina, Natalia F. Zakirova, Olga A. Khomich, Martins Kalis, Oleg E. Latyshev, Elizaveta S. Starodubova, Olga N. Ivanova, Sergey N. Kochetkov, Maria G. Isaguliants, Alexander V. Ivanov