古代数目名,一万亿。
此外,作者在线虫形态学研究的基础上,继续深入到细胞遗传学水平,选择其中的两对秭妹线虫作为研究对象,试图从细胞遗传学的角度来探讨线虫种类之间的相互关系。
In addition , studies were continued into cytogenetic level to try to understand relationships between nematode species .