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Homework Help: RBCs in an ionic solution

  1. Sep 16, 2008 #1
    Is there a range of salt in which red blood cells can survive in an isotonic solution. My current understanding is that they can survive in a 0.9% w/v NaCl isotonic solution. But can that number be varied to a range of different amounts of NaCl in which they can survive for any amount of time long enough to take some measurements?
  2. jcsd
  3. Sep 18, 2008 #2


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    To answer this, you would have to know something about the salt content of RBCs to determine if there is a normal range of concentrations. Otherwise, I'm wondering if you fully understand the term isotonic. The way your question is worded sounds like you might not...but I could be wrong. Why don't you define isotonic so we can see if you have it right, since that's important for answering this question.
  4. Sep 20, 2008 #3
    A solution with the same concentration of salt as cells.
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