adult Malpighian tubule segment adult stem cell zone of Malpighian tubule 2020-05-11T14:33:48Z Proximal portion of the adult Malpighian tubule comprising the lower tubule and ureter (Wang and Spradling, 2020). It contains stem cells, but no type II (stellate) cells (Wang and Spradling, 2020). FBbt:00049469 adult Malpighian tubule SCZ fly_anatomy.ontology