Shares of Medicenna Therapeutics Corp. (TSE:MDNA – Get Rating) shot up 1.3% during mid-day trading on Tuesday . The stock traded as high as C$0.83 and last traded at C$0.81. 33,502 shares changed hands during trading, an increase of 47% from the average session volume of 22,754 shares. The stock had previously closed at C$0.80. […]