code: def immunohistochemistry():
      """Immunohistochemical (IHC) staining with hematoxylin counterstaining.
  
      This picture shows colonic glands where the IHC expression of FHL2 protein
      is revealed with DAB. Hematoxylin counterstaining is applied to enhance the
      negative parts of the tissue.
  
      This image was acquired at the Center for Microscopy And Molecular Imaging
      (CMMI).
  
      No known copyright restrictions.
  
      Returns
      -------
      immunohistochemistry : (512, 512, 3) uint8 ndarray
          Immunohistochemistry image.
      """
      return _load("data/ihc.png")
  
imports: import numpy
  import shutil
  from ..util.dtype import img_as_bool
  from ._registry import registry, registry_urls
  from ..None import __version__
  import os.path
  import os
label_desc: Use image node_id 29 for calling a global function with example usage: immunohistochemistry() and returns: _load