part of epithelial cell adult foregut cell of proventricular intermediate layer adult foregut epithelial cell adult proventriculus epithelial cell adult proventriculus epithelial zone 2 adult proventriculus zone 2 epithelial cell 2024-06-21T10:20:16Z fly_anatomy.ontology Epithelial cell of the second zone of the adult proventriculus epithelium (King, 1988). This is a columnar cell with irregular cytoplasmic extensions (narrow folds and microvilli) which project into the extracellular material beneath the overlying cuticle. Its basal end is slightly narrower than its apex and inclined posteriorly. There are approximately 600 of these cells in the adult proventriculus (Zhu et al., 2024). PV2 cell FBbt:00059332