Question

liquid nitrogen is used in medical field to preserve​

Answer 1

Liquid nitrogen is invaluable for preserving blood and bone marrow cells, sperm, ova, early embryos, and, in the microbiology laboratory, a variety of microorganisms (bacteria, fungi, etc). In cryosurgery, a super-chilled scalpel may be used to remove cancer tissue.

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Answer 2

Answer:

Liquid nitrogen is invaluable for preserving blood and bone marrow cells, sperm, ova, early embryos, and, in the microbiology laboratory, a variety of microorganisms (bacteria, fungi, etc). In cryosurgery, a super-chilled scalpel may be used to remove cancer tissue