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Red blood cells are suspended in plasma which has a concentration equivalent to that of For
PMT
0.9% sodium chloride (NaCl) solution.
A student investigated what happens to red blood cells when placed into sodium chloride
solutions of different concentration.
A small drop of blood was added to 10cm3 of each sodium chloride solution. Samples were taken from each mixture and observed under the microscope. The number of red blood cells remaining in each sample was calculated as a percentage of the number in the 0.9% solution. The results are shown in Fig. 3.1
Sagot :
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