Saving the snow leopard with stem cells

(PhysOrg.com) -- The survival of the endangered snow leopard is looking promising thanks to Monash University scientists who have, for the first time, produced embryonic stem-like cells from the tissue of an adult leopard.

Freezing cells made safer thanks to new polymer

Cell freezing (cryopreservation)—which is essential in cell transfusions as well as basic biomedical research—can be dramatically improved using a new polymeric cryoprotectant, discovered at the University of Warwick, ...

Cryopreservation: A chance for highly endangered mammals

Oocytes of lions, tigers and other cat species survive the preservation in liquid nitrogen. Scientists of the Leibniz Institute for Zoo and Wildlife Research (IZW) in Berlin succeeded in carrying out cryopreservation of felid ...

Physicists crack science of ice formation

(Phys.org)—Salt—and just about anything else that dissolves in water, which is called a solute—lowers water's melting point, which is why it's useful for de-icing roads. And the higher the solute concentration, the ...

Sneaking up on the glassy transition of water

Rapid cooling of ordinary water or compression of ordinary ice: either of these can transform normal H2O into an exotic substance that resembles glass in its transparency, brittleness, hardness, and luster. Unlike everyday ...

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Cryopreservation

Cryopreservation is a process where cells or whole tissues are preserved by cooling to low sub-zero temperatures, such as (typically) 77 K or −196 °C (the boiling point of liquid nitrogen). At these low temperatures, any biological activity, including the biochemical reactions that would lead to cell death, is effectively stopped. However, when cryoprotectant solutions are not used, the cells being preserved are often damaged due to freezing during the approach to low temperatures or warming to room temperature.

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