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J Virol Methods. 1982 Nov;5(3-4):165-71.

Freeze-drying is an effective method for preserving infectious type C retroviruses.


Conventional freeze-drying techniques using a sucrose stabilizer and gelatin can be employed to preserve the infectivity of retroviruses. Lyophilized virus retains its infectivity even at room temperature for more than one year. A lyophilized virus preparation of Friend leukemia virus kept at 4 degrees C for more than 20 years was found to contain high titers of infectious pathogenic virus. This technique offers an easy economic means for shipping type C viruses and for preserving them for long periods of time in the laboratory without the need for cold storage.

[Indexed for MEDLINE]

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