Biogen to buy Apellis Pharmaceuticals for $5.6 billion
March 31 (Reuters) - Biogen BIIB.O said on Tuesday it has agreed to acquire Apellis Pharmaceuticals for about $5.6 billion in cash. (Reporting by Mariam Sunny in Bengaluru; Editing by Tasim Zahid) ((Mariam.ESunny@thomsonreuters.com;))