11.   And in the ice-climbing, athletes scale fragile man-made walls refrigerated with liquid nitrogen.

12.   At a Genetic Therapy laboratory in Gaithersburg, Md., Susan Thomas lifted human cells from a tank of liquid nitrogen.

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

14.   - After processing, blood will be preserved with liquid nitrogen until needed.

15.   A dermatologist can use liquid nitrogen to burn off any precancerous lesions and prevent them from developing into full-blown melanoma.

16.   A person gets taken out of hypertime by being blasted by a snowball of liquid nitrogen.

17.   A tank of liquid nitrogen, otherwise empty, is always ready in case one of the other storage tanks fails.

18.   After a few days, when the cells have divided several times, the embryo is frozen in liquid nitrogen tanks to be preserved for later implantation.

19.   But that increase in temperature allows the company to use liquid nitrogen to cool the material, a less expensive alternative to helium.

20.   But while YBCO is an excellent superconductor at the temperature of liquid nitrogen, it has some major disadvantages.