Objective To establish a protein expression system using pyrG gene as a selection marker and Aspergillus niger (A.niger) as a host.是什么意思_Objective To establish a protein expression system using pyrG gene as a selection marker and Aspergillus niger (A.niger) as a host.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句