The study declares PDT change the biological character of tumor cells ,enhances immunogenicity by inducing tumor cell apoptosis or killing tumor cell directly.

• 研究表明，光动力学治疗可能通过杀死或诱导凋亡，改变了肿瘤细胞的生物学特性，提高了肿瘤细胞的免疫原性。