An MHC class I tetramer was composed of 4 MHC class I complexes and a fluorescently labeled streptavidin molecule.

MHC I类四聚体是由4个MHC I类复合物和一个带有荧光标的亲和素分子组成的。

The results showed that the obtained product is a mixture mainly composed of dimer, trimer, tetramer and pentamer .

结果表明，聚合物主要是二聚物、三聚物、四聚物、五聚物。

The results indicated that novel catalyst system had high activity for propylene oligomerization. The products were mainly tetramer and pentamer.

结果表明：该配合物催化丙烯低聚具有较高的催化活性，产物主要以四聚物、五聚物为主。