Jan 21 (Reuters) - Atara Biotherapeutics ATRA.O said on Tuesday the U.S. Food and Drug Administration has placed a clinical hold on the drug developer's trials for its cancer cell therapies.
(Reporting by Kamal Choudhury in Bengaluru; Editing by Shilpi Majumdar)
((Kamal.Choudhury@thomsonreuters.com))