part of adult initial segment of Malpighian tubule Malpighian tubule Type I cell adult Malpighian tubule principal cell of initial segment 2020-05-11T15:40:01Z adult Malpighian tubule PC of initial segment Any Malpighian tubule Type I cell (FBbt:00005796) that is part of some adult initial segment of Malpighian tubule (FBbt:00005729). FBbt:00049474 adult Malpighian tubule Type I cell of initial segment fly_anatomy.ontology adult Malpighian tubule principal cell of upper tubule