text: Yo, check it out, here's the rap rendition
  Of a study on biodegradable copolymers, pay attention
  Polyaspartamide, that's the base, you see
  Grafted with hydrophilic MPEG, CA, and Hyd, it's the key
  
  In an acidic environment, the hydrazone group breaks free
  Releasing DOX on the PASPAM, can't you see?
  FT-IR and H-NMR, they analyze the structure
  Substitution degree, they measure, no rupture
  
  DLS and TEM, they examine the size
  MPEG/Hyd/CA-g-PASPAM, copolymer that rise
  The self-aggregates grow, from 125 to 200 nm
  At pH 7.4, as CA's substitution hits the top, damn!
  
  The release of DOX, it's influenced by pH
  At 7.4, less than 30% in 30 hours, you see?
  But at pH 5.0, more than 60% in the same time
  Controlling the delivery, it's a crime!
  
  In the lab, they tested MCF-7 and 293T
  Human breast cancer cells and kidney cells, you see?
  The potential is there, for cancer treatment, no doubt
  MPEG/Hyd/CA-g-PASPAM, self-aggregates to shout!