code: def load_protein():
      data_home = get_data_home()
      train_file = os.path.join(data_home, "protein.tr")
      test_file = os.path.join(data_home, "protein.t")
      return _todense(_load(train_file, test_file, "protein"))
  
imports: import os
  import numpy
  import scipy.sparse
  from sklearn.datasets.base import get_data_home
  from sklearn.utils import check_random_state
label_desc: Use image node_id 28 for calling a global function with example usage: load_protein() and returns: _todense