目的：探讨己酮可可碱对老年不稳定型心绞痛患者血浆纤维蛋白原含量的影响。
Objective: To evaluate the effect of pentoxifylline (PTX) on plasma fibrinogen content in old patients with unstable angenia pectoris.
目前采用的彗星实验有多种，可以检测诸如dna双链断裂、单链断裂、碱不稳定位点等多种类型的DNA损伤。
Different techniques are available with different sensitivity to detect DNA damages such as double strand breaks, single strand breaks, delay DNA repair sites and alkali labile sites.
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