Some studies have shown that Viagra's ingredient "sildenafil" may inhibit the metastasis and spread of cancer cells. How far is it from being used in clinical cancer treatment?

有研究表示伟哥成分「西地那非」或能抑制癌细胞转移扩散，距离真正用于临床癌症治疗还差什么？

A public trend signal observed across 1 source.