Initial composting, the number of DGGE bands was 20.

表现为堆肥初期，DGGE条带数较多，为20。

Methods: PCR, denatur ing gradient gel electrophoresis ( DGGE ) atd DNA sequencing were used.

方法: 采用多聚酶链反应(PCR), 变性梯度凝胶电泳 ( DGGE ) 和DNA测序等方法对上海地区血友病甲基因突变进行检测.

Variation of microbial communities in inoculated and natural composts was studied with the traditional incubation method and the PCR-DGGE technology.

采用传统培养方法和PCR-DGGE技术研究了人工接种堆肥和自然堆肥微生物群落的演变过程。