Method of cryopreserving a suspension of biological material

Chemistry: molecular biology and microbiology – Maintaining blood or sperm in a physiologically active state...

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4352351, 4352402, 435260, 62 62, A01N 102, C12N 700, C12N 500, C12N 104, F25D 2500

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053647564

ABSTRACT:
This invention relates to methods, apparatus and solutions for cryopreserving microscopic biological materials for biologically extended periods of time. The method comprises treating a suspension of biological material, in an appropriate buffer, with a cryoprotectant or combination of cryoprotectants which raises the glass transition temperature range of the sample. One or more dry protectants may be added to the cryosolution. The cryosolution is then nebulized and rapidly cooled with novel apparatus, dried by molecular distillation, stored and then rehydrated in a buffer prior to its use. The solutions comprise novel mixtures of cryoprotectants.

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