organism_________________
multicellular structure__|
                         organ system
                          |__tracheal system  3068 rec.
                              |__adult tracheal system 179 rec.
                              |   |__adult peritracheal PM cell 3 rec.
                              |   |__adult spiracle(+) 33 rec.
                              |   |__adult tracheal section(+) 85 rec.
                              |   |__adult tracheocyte(+) 44 rec.
                              |__larval tracheal system 2634 rec.
                              |   |__embryonic/larval peritracheal cell(+) 14 rec.
                              |   |__embryonic/larval spiracle(+) 908 rec.
                              |   |__embryonic/larval tracheal section(+) 1377 rec.
                              |   |__imaginal tracheal precursor(+) 45 rec.
                              |   |__larval tracheocyte(+) 86 rec.
                              |   |__tracheal precursor cell 15 rec.
                              |__peritracheal cell 16 rec.
                              |   |__adult peritracheal PM cell 3 rec.
                              |   |__embryonic/larval peritracheal cell(+) 14 rec.
                              |__pupal tracheal system 177 rec.
                              |   |__air bubble 26 rec.
                              |   |__coiled tracheole 6 rec.
                              |   |__pupal spiracle(+) 100 rec.
                              |   |__pupal tracheal section(+) 68 rec.
                              |__spiracle 1030 rec.
                              |   |__adult spiracle(+) 33 rec.
                              |   |__embryonic/larval spiracle(+) 908 rec.
                              |   |__pupal spiracle(+) 100 rec.
                              |__tracheal metamere 166 rec.
                              |   |__abdominal tracheal metamere(+) 46 rec.
                              |   |__thoracic tracheal metamere(+) 126 rec.
                              |__tracheal section 1578 rec.
                              |   |__adult tracheal section(+) 85 rec.
                              |   |__embryonic/larval tracheal section(+) 1377 rec.
                              |   |__pupal tracheal section(+) 68 rec.
                              |   |__taenidial channel 1 rec.
                              |   |__taenidial fold(+) 65 rec.
                              |   |__tracheal branch(+) 936 rec.
                              |   |__tracheal node(+) 30 rec.
                              |__tracheocyte 240 rec.
                                  |__adult tracheocyte(+) 44 rec.
                                  |__larval tracheocyte(+) 86 rec.
                                  |__tracheal node cell 1 rec.
                                  |__tracheocyte of pupal dorsal tracheal branch
                                  |__tracheocyte of pupal ganglionic tracheal branch
                                  |__tracheocyte of pupal spiracular tracheal branch
                                  |__tracheocyte of pupal tracheal dorsal trunk
                                  |__tracheocyte of pupal tracheal lateral trunk
                                  |__tracheocyte of pupal tracheal transverse connective
                                  |__tracheolar cell(+) 104 rec.