目前六种之中只有一种——抗虫性转基因棉花在广泛地种植。

Just one of the six—insect-resistant cotton—is now planted widely.

目的：探讨可溶性转铁蛋白受体、血清中铁蛋白在缺铁性贫血诊断中的意义。

Objective:To study the significance of serum ferritin , transferrin receptor in the diagnostic of iron deficient anemia.

结论：上肢静脉向下肢静脉暂时性转流术可作为治疗恶性肿瘤所致上腔静脉综合症的一种简单、有效的辅助方法。

Conclusion: Temporary venous bypass from upper to lower limb may be a simple, effective accessory method in the treatment of SVCS caused by malignant tumors.