A completely different approach is to use RNAinterference, a relatively new technique for switching off individual genes by delivering short stretches of RNA.
另一种完全不同的方法是RNA干扰。它采用相对较新技术通过转录小rna分子来关闭各别基因。
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Other firms are looking beyond directly blocking VEGF, and are using RNAinterference to target other molecules in its signalling pathway, either upstream or downstream.