text: Yo, check it out, I'm 'bout to drop some rhymes,
  Talkin' 'bout aldosterone-producing adenomas one time.
  These tumors in the adrenal gland, they can vary,
  Some responsive to renin-angiotensin, some contrary.
  
  Listen up, let me break it down real clear,
  We found renin mRNA levels different, no need to fear.
  Angiotensin-responsive adenomas, they show high expression,
  Compared to the unresponsive ones, it's a striking confession.
  
  Now, let's talk about the renin gene, G,
  Different allelic frequencies, that's the key.
  BglI, TaqI, and HinfI, they play a role,
  Restriction fragment length polymorphisms on the roll.
  
  We examined the 5' flanking region, minus 500 base pairs,
  No insertions, no deletions, no genetic affairs.
  We used a long polymerase chain reaction technique,
  To study the area, no changes did we seek.
  
  PCR-SSCP analysis, that's the name of the game,
  No single base pair alteration, ain't that a shame?
  In the proximal promoter region, we took a good look,
  No mutations found, no need to get shook.
  
  So, it seems these regulatory regions don't explain,
  The levels of renin gene expression, it's not the main.
  In these aldosterone-producing adenomas, you see,
  Different subtypes, but the mutations ain't the key.