Anti-CCR4 treatment depletes regulatory T cells and leads to clinical activity in a canine model of advanced prostate cancer ============================================================================================================================ * Shingo Maeda * Tomoki Motegi * Aki Iio * Kenjiro Kaji * Yuko Goto-Koshino * Shotaro Eto * Namiko Ikeda * Takayuki Nakagawa * Ryohei Nishimura * Tomohiro Yonezawa * Yasuyuki Momoi