text: Yo, check it out, listen up, I got something to say,
  About the kidney, an organ that's vital every day.
  It's prone to diseases, that's a fact, no lie,
  But we got a technique, let me tell you why.
  
  Photoacoustic imaging, it's a powerful tool,
  For studying kidney dysfunction, ain't that cool?
  We developed smart agents, to make it all clear,
  But there's a challenge, toxicity we fear.
  
  After imaging, the agents don't clear out,
  Long-term toxicity, that's what we're talkin' 'bout.
  But hold up, we got a solution, don't despair,
  We synthesized black phosphorous quantum dots with care.
  
  These BPQDs are ultra-small in size,
  Surface modified, they're a real prize.
  Strong PA signal, perfect for imaging,
  Detecting kidney dysfunction, that's what we're bringing.
  
  They're renal-clearing and biodegradable too,
  No long-term toxicity, that's what they do.
  In living mice, we tested, and let me tell you straight,
  We detected acute and chronic kidney disease, ain't that great?
  
  PA imaging with BPQDs, it's the way to go,
  Higher detection sensitivity, more than you know.
  Forget the serum indices, this method's the key,
  Early diagnosis of kidney dysfunction, that's what it'll be.
  
  So listen up, this method's promising and bright,
  For diagnosing kidney dysfunction, it's outta sight.
  With BPQDs-based PA imaging in the clinic,
  We're on the path to early detection, no gimmick.