Nexvet Biopharma (Nasdaq:NVET), a veterinary biologics developer, and Zenoaq (Nippon Zenyaku Kogyo Co., Ltd.), a leading Japanese animal health company, announced today their research and development collaboration has yielded fully caninized, or ‘100% dog’, monoclonal antibodies (mAbs) that bind and potently inhibit the immuno-oncology target programmed cell death protein 1 (PD-1).