通过细菌接合将质粒ｐＬＶ１０１６（含ｘｖｌＥ基因）转移至ＲｈｉｚｏｂｉｕｍｆｒｅｄｉｉＱＢ１１３０和Ｒｈｉｚｏｂｉｕｍｌｅｇｕｍｉｎｏｓａｒｕｍｂｖ．ｖｉｃｉａｅＢ４０，ｘｙｌＥ基因在根瘤菌内表达活性较高．质粒ｐＬＶ１０１６携带的ＸｙｌＥ基因用于监测根瘤菌在灭菌和未灭菌土壤中的存活，结果表明......

流媒体技术的出现使音频文件在网络媒体中的顺利传播成为现实，从而使网络媒体对于广播媒体的直接竞争开始突现。该文以“流媒体时代......

From February 1986 to February 1989, 64 patients with malignant lymphoma were treated with COBDP regimen. Of these patie......