biological_process
   |__multicellular organismal process
       |__digestion  18 rec.
           |__digestive system process 16 rec.
           |   |__defecation(+) 1 rec.
           |   |__gastric acid secretion(+)
           |   |__gastric motility(+) 1 rec.
           |   |__hindgut contraction(+) 1 rec.
           |   |__intestinal absorption(+) 2 rec.
           |   |__intestinal motility(+)
           |   |__maintenance of gastrointestinal epithelium(+) 8 rec.
           |   |__mastication
           |   |__pancreatic juice secretion(+)
           |   |__regulation of digestive system process(+) 4 rec.
           |   |__rumination
           |   |__saliva secretion(+)
           |__lipid digestion 2 rec.
           |   |__intestinal cholesterol absorption(+) 2 rec.
           |__polysaccharide digestion
           |__protein digestion