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。
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。
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.
由于抗血管生成药物具有毒性低、不易产生获得性耐药的特点。因此，通过抑制血管生成来抑制肿瘤生长成为目前肿瘤治疗的策略之一。
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