polymerase chain reaction
noun [ C or U ] biology, chemistry, medical specialized uk/pəˌlɪ.mər.eɪz ˌtʃeɪn riˈæk.ʃən/ us/pəˌlɪ.mər.eɪs ˌtʃeɪn riˈæk.ʃən/ (abbreviation PCR)
聚合酶链式反应
a process in which a particular piece of DNA is copied many times in a laboratory (= a place where scientific tests are done) so that the DNA can be examined in detail
To obtain enough of the gene to work with, the researchers make multiple copies of it using a technique called polymerase chain reaction.
Polymerase chain reactions were performed in batches of 10 samples. 聚合酶链式反应是以10个样品为一批进行的。
- More examples
- Infection is best diagnosed with polymerase chain reaction using urine or serum.
- Defined malaria parasite gene sequences can be identified through polymerase chain reaction technology.
- The polymerase chain reaction has been used to identify very small remnants of bacteria by identifying their nuclear contents.
- The machine can be set to detect the DNA of almost any biological substance within 30 minutes by performing polymerase chain reactions.