Couldn't generate code for the following reason:
Encountered unsupported operator partialdiff; 
  In MathML apply element.
  In MathML math element.
  In CellMLComponent element with cmeta:id q with name q.
  In Model element with cmeta:id palecek_horwitz_lauffenburger_1999_version02 with name palecek_horwitz_lauffenburger_1999_version02.