T抗原てぃーこうげんMeanings1nounT antigen; tumor antigenMedical term for an antigen expressed by tumor cells, often used in cancer immunology.T抗こう原げんは、がん免めん疫えき療りょう法ほうの標ひょう的てきとして研けん究きゅうされている。T antigen is being studied as a target for cancer immunotherapy.