text: Yo, listen up, I got some knowledge to drop,
  About them lysophospholipases, straight from beef liver's top.
  Two enzymes, distinct and pure, we obtained,
  But aging the liver homogenate, no change was gained.
  
  No interconversion happened, the ratio remained,
  The lysophospholipases, their forms unchanged.
  Exploring their structures, we went real deep,
  Using immunochemical techniques, secrets we would keep.
  
  Rabbit antisera was raised, against each enzyme's name,
  No cross-reactivity found, they played a separate game.
  Immuno double-diffusion and immunoprecipitation,
  Results showed no interaction, no enzyme collaboration.
  
  Lysophospholipase II, purified and true,
  Antibodies against it, brought esterase activity too.
  Both activities, precipitated side by side,
  A single polypeptide chain, where they both reside.
  
  Isoelectric focusing experiments, we had done before,
  Previous findings aligned, validating our score.
  So remember, in beef liver's lysophospholipase domain,
  Two enzymes, one chain, a scientific refrain.