目的探讨体外激活血卟啉、开展光动力学疗法治疗消化道肿瘤的疗效及其毒副反应。
Objective to explore the curative effects and the toxicity of these patients with alimentary canal tumor treated with photodynamic method by using hematoporphyrin derivation (HPD) in Vitro irritated.
结论：凋亡为叶绿素衍生物cpd 4光动力学治疗杀伤体外培养细胞的主要作用机制。
Conclusion: Apoptosis is the main mechanism of chlorophyll derivative CPD4 photodynamic therapy to kill culture cells in vitro.
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