Final answer:
Dehydrated tissue can be stored at -10°C with strict monitoring but is best preserved at temperatures below -70°C as cold storage inhibits biological activity and microbial growth.
Step-by-step explanation:
Dehydrated tissue may be stored at -10°C, but it necessitates rigorous climate control and monitoring to ensure the longevity of the specimens. Optimal storage for dehydrated or freeze-dried tissues and specimens is typically at ultra-low temperatures below -70°C, commonly achieved using ultra-low freezers or liquid nitrogen storage methods. Such conditions thwart biological activity, including the growth and metabolism of any microorganisms present.
The reference to cultures and medical specimens being stored at ultra-low temperatures indicates the necessity of maintaining these samples at temperatures lower than -70°C for extended viability. However, -10°C might be temporarily acceptable for some specimens if maintained properly. This storage at -10°C would likely require more frequent checks to ensure it remains adequate and that no cell damage or bacterial growth occurs.
In summary, storing at -10°C is not optimal for long-term preservation of dehydrated tissue. Dehydrated tissue can be stored at -10°C if monitored, but for extended preservation, temperatures below -70°C are recommended.