The endogenous retroviral NP9 gene was isolated and cloned using reverse transcription polymerase chain reaction (RT-PCR) and T-A cloning techniques, and its sequence was determined with Perkin-Elmer ABI 377 DNA Sequencer.是什么意思_The endogenous retroviral NP9 gene was isolated and cloned using reverse transcription polymerase chain reaction (RT-PCR) and T-A cloning techniques, and its sequence was determined with Perkin-Elmer ABI 377 DNA Sequencer.在线翻译_英语_读音_用法_例句