例句與造句

1. Oligonucleotide phosphorothioates ( OPS ) are modified oligonucleotides where one of the oxygen atoms in the phosphate moiety is replaced by sulfur.
2. Only the phosphorothioates having sulfur at a non-bridging position as shown in figure are widely used and are available commercially.
3. Usually, antagomirs have some sort of modification, such as 2'- methoxy groups and phosphorothioates, to make them more resistant to degradation.
4. But these sulfurized oligos, called phosphorothioates, are sticky, binding promiscuously to enzymes, proteases and proteins as well as mRNA, so further modification was needed.
5. It's difficult to find phosphorothioates in a sentence. 用phosphorothioates造句挺難的