 SOUTH SAN FRANCISCO, Calif.--BUSINESS WIRE--Atara Biotherapeutics, Inc. Nasdaq: ATRA, a pioneer in T-cell immunotherapy, leveraging its novel allogeneic EBV T-cell platform to develop transformative therapies for patients with serious diseases including solid tumors, hematologic cancers and autoimmune disease, today announced the presentation of the first preclinical evaluation of ATA3219, a next-generation, off-the-shelf, allogeneic CAR T-cell therapy targeting CD19, as well as data suppor 