Once a tumor has acquired resistance to a specific chemotherapeutic agent, it is common to observe collateral resistance to other structurally similar agents.
一旦肿瘤对特定的化学治疗剂具有获得性抗性之后，通常就会观察到其对其它结构类似的试剂的间接抗性。
2
Conclusions a higher label rate can be acquired without practicing further purification procedures with this method. Thus, it is applicable to scintigraphy of tumor somatostatin receptor (SSTR).
结论此方法标记奥曲肽有较高的标记率，无需进一步纯化，可用于肿瘤生长抑素受体显像。
3
As the features of angiogenesis inhibitors are of low toxicity and have less acquired resistance, it comes to a new strategy to suppress tumor growth by restraining angiogenesis.