specimens词根词缀

The HHV-7 positive rates of plasma specimens of disease controls, healthy controls and febrile disease group are 0.0%, 5.4%, 18.0% respectively.

三组血浆标本中HHV-7的阳性率分别为0.0%、5.4%、18.0%，发热疾病组分别和其余两组比较均有显著性差异（p＜0.05）。

With the development of the age the HHV-7 positive rates were increased in saliva specimens, but not in plasma samples.

唾液标本中HHV-7的阳性率随年龄的增长而增高（p＜0.05），而各组性别之间无明显差异。

There are only four known specimens remaining, and only one female& an 85-year-old resident of the Suzhou Zoo.

据研究人员所知，目前世界上仅剩四只斑鳖，其中仅有一只雌性斑鳖，也就是苏州动物园中85岁的这一只。