Question

    Cattle semen is frozen and stored for long periods in

    liquid nitrogen at temperature:
    A -50˚C Correct Answer Incorrect Answer
    B -79˚C Correct Answer Incorrect Answer
    C -135˚C Correct Answer Incorrect Answer
    D -196˚C Correct Answer Incorrect Answer

    Solution

    Cryopreservation in liquid nitrogen (−196°C) is a technique that allows for long‐term storage of spermatozoa. 

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