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The preservation of agar slopes has an expiration of 6 months and the agar needs to be changed every 6 months. Which of the following can be used to extent sub-culturing to 1 year?

The preservation of agar slopes has an expiration of 6 months and the agar needs to be changed every 6 months. Which of the following can be used to extent sub-culturing to 1 year? Correct Answer Paraffin oil

The agar slants can be covered by paraffin oil and the extension time can be increased from 6 months to 1 year. DMSO, Glycerol, Loamy soil are used in the preservation techniques for the preservation of microbes more than decades.

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