adult digestive system
 |__adult alimentary canal__
alimentary canal            |
 |__gut_____________________|
 |__adult alimentary canal__|
multi-tissue structure      |
 |__gut_____________________|
                            adult gut  2250 rec.
                             |__adult enterocyte 249 rec.
                             |   |__adult hindgut enterocyte
                             |   |__adult midgut enterocyte(+) 182 rec.
                             |__adult foregut 127 rec.
                             |   |__adult esophagus(+) 23 rec.
                             |   |__adult foregut epithelium(+) 22 rec.
                             |   |__adult pharynx(+) 40 rec.
                             |   |__chitinous intima of the adult foregut(+)
                             |   |__crop(+) 72 rec.
                             |__adult hindgut 160 rec.
                             |   |__adult anal pad 2 rec.
                             |   |__adult anterior hindgut 14 rec.
                             |   |__adult hindgut epithelium(+) 33 rec.
                             |   |__adult hindgut muscle cell(+) 1 rec.
                             |   |__adult posterior hindgut(+) 31 rec.
                             |   |__adult pylorus(+) 30 rec.
                             |   |__chitinous intima of the adult hindgut
                             |__adult midgut 1786 rec.
                             |   |__adult midgut constriction(+)
                             |   |__adult midgut epithelium(+) 1263 rec.
                             |   |__adult midgut muscle cell(+) 30 rec.
                             |   |__adult midgut region(+) 319 rec.
                             |   |__adult peritrophic membrane 26 rec.
                             |__adult midgut-hindgut hybrid zone
                             |   |__epithelial cell of the adult midgut-hindgut hybrid zone
                             |__adult proventriculus 86 rec.
                                 |__adult cardial muscle cell
                                 |__adult cardial valve(+) 8 rec.
                                 |__adult midgut cell of proventriculus(+)
                                 |__adult proventriculus epithelium(+) 16 rec.