The normal lifespan of a red blood cell (RBC) is approximately 120 days in circulation, after which they are removed and recycled primarily by the spleen and liver.
What is the normal lifespan of an RBC according to the source paper?
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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.