短語(yǔ)詞組短語(yǔ)method of gene splicing 基因拼接方法gene splicing by overlap extension 基因拼接法gene splicing by overlapping extensionPCR 基因重疊延伸拼接PCRsplicing gene 斷裂基因alternative splicing variants gene 選擇性剪接變異體 返回 gene splicing