例句與造句

1. Defective interfering RNAs are small sub-viral replication of the host virus.
2. Research has shown that infection of plants from tombusviruses contain defective interfering RNAs that are born directly from the viruses RNA genome, and no host genome.
3. The virus uses the cis-regulatory elements, Tombus virus defective interfering ( DI ) RNA region 3 and Tombusvirus 5'UTR to control expression of defective interfering RNAs and viral RNA replication.
4. It's difficult to find defective interfering rna in a sentence. 用defective interfering rna造句挺難的