text: Yo, check it out, let me break it down,
  This study aimed to analyze fluoride's bio-availability,
  And see how it accumulates in the bone, in the pig's vicinity.
  We had eight pigs, getting 2 mg F-/kg b.w. a day,
  From 8 to 14 months, that was the chosen way.
  
  Then we compared them to eight other pigs, the control,
  Measuring plasma fluoride levels, yo, that was our goal.
  Before the daily oral dose, we checked it out,
  At regular intervals, no doubt.
  
  After 112 days, we went for the test,
  Measuring plasma fluoride, we did our best.
  For 48 hours, yo, we kept it in sight,
  After the oral dose or intravenous, that's right.
  
  The oral dose showed a bio-availability factor of 0.3,
  In the range of 0.2 to 0.4, it wasn't just a story.
  And the biological half-life, it averaged 59 days,
  From 49 to 72, yo, in different ways.
  
  Using these parameters, we calculated the bone's fluoride content,
  Matched the levels measured at slaughter, it was evident.
  The study showed that fluoride accumulation in the bone,
  Impacted plasma levels, this fact was known.
  
  The long half-life revealed steady-state was hard to reach,
  Within six months, it was out of our speech.
  So for dental fluorosis studies, we couldn't rely,
  On steady-state plasma levels, no lie.
  
  To correlate with teeth changes, it wasn't possible,
  To establish a basis, it wasn't feasible.
  So that's the deal, the rap is complete,
  The study's findings, straight from the beat.