The disclosure relates to methods of treating or preventing a disease in a subject by conjointly administering to the subject an arginase inhibitor disclosed herein and a composition comprising immune cells disclosed herein.本發明係關於治療或預防個體疾病之方法,其係藉由向該個體聯合投與本文所揭示之精胺酸酶抑制劑及本文所揭示之包含免疫細胞之組合物。