MedImmune LLC is spinning out six compounds into severe autoimmune disease play Viela Bio Inc. (Gaithersburg, Md.). Bing Yao, who is head of the AstraZeneca plc (LSE:AZN; NYSE:AZN) subsidiary’s Respiratory, Inflammation & Autoimmunity (RIA) Innovative Medicines unit, will become CEO of the newco. Jorn