deep-freezing

Many poor countries are reliant on J&J’s vaccine because it does not require complicated cold-chain storage at deep-freezing temperatures and it can protect against severe disease, even if it doesn’t perform as well against overall infection.

The mRNA shots from Pfizer require deep-freezing temperatures and can only be refrigerated for up to five days, while Moderna’s can remain viable for up to 30 days in a normal fridge.

Deep-freezing eggs, sperm, and embryos to save them for later is called cryopreservation.

American Hamilton was initially allowed to keep his medal in 2004, despite testing positive for blood doping, because the laboratory accidentally destroyed his B sample by deep-freezing it.

Q. Does deep-freezing fish kill harmful parasites?