text: Yo, check it out, listen up, I got a story to tell,
  'Bout HIV-1, Ug06 and Ug23, straight from the cell.
  Culture from PBMCs, Ugandan subjects, you see,
  Studied their relationships, phylogenetic spree.
  
  Lab strains HTLV-IIIB and HIV-1MN in the mix,
  Comparing with Ugandan isolates, getting our kicks.
  Results suggest they're related to African subgroups,
  Genetic distance of 17.3% and 12.6%, that's the scoop.
  
  V3 region and CD4-binding site, heterogeneity in sequence,
  Ug06 and Ug23, man, they got some differences, no tease.
  But hold up, we found a conserved amino acid sequence,
  In the C-terminal region, envelope glycoprotein's the essence.
  
  Now let's talk about neutralization, how these viruses fare,
  Testing HTLV-IIIB and HIV-1MN, let's compare.
  North American serum samples, they got the power,
  Neutralizing both Ugandan isolates, a wide shower.
  
  But wait, Ugandan serum panel, they got their own game,
  Strain-specific activity, Ug06 or Ug23, no shame.
  And African serum specimens, they got the upper hand,
  Higher prevalence and titers, HIV-1MN's their brand.
  
  So there you have it, the story of these isolates,
  Rap style, keeping the content straight, no debates.
  HIV-1, Ug06, Ug23, they got their own groove,
  Phylogenetic relationships and neutralization move.