| http://www.w3.org/ns/prov#value | - These results indicated that freeze-thawing cycles appear to be more problematic than long-term storage at ???20 or ???70??C in terms of sample maintenance.The effects of freeze-thawing have been shown mainly in samples obtained from humans, nonhuman primates, and laboratory animals, such as rats and dogs [18???21]; however, controlled studies of the effects on mouse samples are in their infancy.
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