The Effect of Signal Sequence and His-tags on the Expression and Anti-Thrombin Activity of Recombinant Hirudin - Hadadian, Shahin; Pishkar, Leila; kazemi, Elmira; Asgari, Saeme; Sepahi, Mina; Komijani, Samira; Afrough, Parviz; Mohajerani, Nazanin (Journal of Medical Bacteriology, 2021)