part of Malpighian tubule Type I cell adult lower ureter adult Malpighian tubule principal cell of lower ureter 2020-05-11T15:50:14Z adult Malpighian tubule PC of lower ureter Principal cell of the adult Malpighian tubule that is found in the lower tubule (Wang and Spradling, 2020). It is smaller and less polyploid than more distal cells in the stem cell zone (Wang and Spradling, 2020). adult Malpighian tubule Type I cell of lower ureter adult Malpighian tubule PC3 cell FBbt:00049478 fly_anatomy.ontology adult Malpighian tubule principal cell of stem cell zone