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Text File  |  1999-11-09  |  283b  |  10 lines
  1. Which of the following help differentiate portal systems from other circulatory routes? B
  2. the absence of capillary beds
  3. two sets of capillary beds
  4. three sets of capillary beds
  5. unusually large arteries and veins
  6. the absence of arterioles and venules
  7.  
  8. [#FRAME:"TRM3S2D"]
  9. NONE
  10.