text: Yo, check it out, I got a scientific passage to drop,
  Gonna spit it in a rap style, so let's rock and roll.
  Using [(14)C]formaldehyde, sodium borohydride,
  In vitro procedure, labelin' proteins with pride.
  
  Polyoma virions purified, proteins got tagged,
  Three capsid proteins, and four histones they bagged.
  No change in the virus, it's still biologically sound,
  Biophysical characteristics, still holdin' it down.
  
  Polyacrylamide gels showed more than viral crew,
  Five radioactive peaks, yeah, that's the clue.
  Seven viral proteins, plus five on the side,
  Four came from serum, in the virus they reside.
  
  The fifth peak, yo, it's a host protein they claim,
  Nonhistone, pre-infection, it's got its own name.
  That's the knowledge I'm droppin', keepin' it real,
  Scientific facts in a rap, that's the deal.