During cryopreservation, sperm cells are particularly vulnerable to cellular damage during critical temperature transitions. The temperature range identified in this question is -15°C to -60°C. Controlled cooling and thawing rates are therefore important for minimizing membrane and cellular injury.
The most critical temperature for spermatozoa during freezing and thawing is between:
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Question context
This question is part of 🧫 Biotechnology within the broader 🧬 Medical Science subject and appears in the PPSC Punjab Public Service Commission preparation collection. Reviewing the answer together with nearby questions helps reinforce the underlying concept and identify how it may appear in competitive exams.