None was positive in 60 normal individuals.
检测正常人血清60份，未见阳性反应。
In normal circumstances, there exists an obvious positive relationship between economic growth and education.
在通常情况下，经济增长与教育之间有着显著的正相关关系。
It is hard to find COX-2 positive cells and apoptosis cells in normal brain tissue.
正常脑组织内未观察到明显COX - 2阳性细胞及凋亡细胞。
But in control group, positive rate was only less than 5%, and we could only see a single normal DNA strip.
对照细胞呈现阳性染色者每视野不超过5%，DNA凝胶电泳只见一条正常基因组dna带。
A normal stress is positive if it is tensile.
如果是拉应力，则该应力为正。
A normal stress is positive if it is tensile.
如果是拉应力，则该应力为正。
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