This test was used to ensure a 100% death rate of cells frozen in liquid nitrogen.

About 35% to 45% of the worms stored in liquid nitrogen survive.

With either of these materials, the odor problem is compounded, because they are so rich in nitrogen.

The deck is not just cold, she's dipped it in liquid nitrogen.

At the start of the study, each man provided blood samples that were stored in liquid nitrogen.

Dropping the chip in liquid nitrogen kept the error rate at a similar level for up to an hour.

The head and body are preserved separately in liquid nitrogen.

It reminded him of two hundred years spent waiting in liquid nitrogen.

Then the cells are frozen and stored in liquid nitrogen.

They turned to synthetic fertilizer rich in nitrogen, the use of which doubled over a 10-year period.