text: Yo, check it out, I got some knowledge to drop,
  About the effect of urinary tract obstruction, nonstop.
  We examined the CO2 flux in tubules, cortical and medullary,
  Using an obstruction model, yeah, it got real scary.
  
  In vitro microperfusion, isolated tubules in the mix,
  From the control and obstructed kidneys, we picked.
  After 1, 2, and 4 days of obstruction, we made a comparison,
  Of the function of tubules and urine pH, no cessation.
  
  Medullary collecting tubules, they showed a decline,
  In acidification after 2 days, yo, that's the sign.
  Only 7.7 +/- 8.5 compared to 29.9 +/- 6.6,
  pmol/mm/min, man, the difference was fixed.
  
  Cortical collecting tubules from the obstructed kidney,
  They were on fire, their acidification was so speedy.
  At all time periods examined, they were on top,
  Postobstructed tubules had levels that wouldn't drop.
  
  At the 24-hour period, they exceeded control tubules,
  Almost significant at 48 and 96 hours, no time for scruples.
  But yo, these data don't match the hypothesis they say,
  The acidification defect ain't voltage-dependent, no way.