例句與造句

1. This system was based on the theory that there was one gene at a single locus on each chromosome, each contributing to production of multiple antigens.
2. The enzyme-linked immunosorbent assay ( ELISA ) or Western blotting are two different ways that the purified antigen ( or multiple antigens ) can be obtained and analyzed.
3. It's difficult to find multiple antigens in a sentence. 用multiple antigens造句挺難的