Because different tissues of same plant species differ in component composition, RNA extraction methods have different nodi.
同种植物不同器官的组织由于组成分的差异，提取RNA的方法也存在不同的难点。
2
The preoperative diagnosis of B ultrasound and nuclide scan in 832 cases with nodi of thyroid were reviewed and compared them with their postoperative pathologic results.