详细解释:【化】 质粒
【医】 质体(胞质遗传体)
英语解释：
名词 plasmid:
a small cellular inclusion consisting of a ring of DNA that is not in a chromosome but is capable of autonomous replication详细解释：
plas.mid
n.（名词）A circular, double-stranded unit of DNA that replicates within a cell independently of the chromosomal DNA. Plasmids are most often found in bacteria and are used in recombinant DNA research to transfer genes between cells.质粒：在细胞中能独立于染色体DNA而复制的圆形的，双链的DNA单元质粒大多常发现于细菌中，在DNA重组体研究中用来在细胞间传递基因