Queried GO terms:

  idGO:0035165   Detailed information
  nameembryonic crystal cell differentiation
  namespacebiological_process
  def"The process in which an embryonic mesoderm-derived hemocyte precursor cell acquires the specialized features of a crystal cell. Crystal cells are a class of cells that contain crystalline inclusions and are involved in the melanization of pathogenic material in the hemolymph." [GOC:bf, http://sdb.bio.purdue.edu/fly/gene/serpent3.htm]
  is_aGO:0035163 ! embryonic hemocyte differentiation
  is_aGO:0042688 ! crystal cell differentiation

Monarch genes with this GO terms:

  DPGLEAN05743

  DPGLEAN20997

  DPGLEAN21068