Queried GO terms:

  idGO:0042588   Detailed information
  namezymogen granule
  namespacecellular_component
  def"A membrane-bounded, cytoplasmic secretory granule found in enzyme-secreting cells and visible by light microscopy. Contain zymogen, an inactive enzyme precursor, often of a digestive enzyme." [GOC:jl, ISBN:0198506732 "Oxford Dictionary of Biochemistry and Molecular Biology"]
  is_aGO:0030141 ! stored secretory granule

No monarch genes has this GO term.