expresses hh Pdk1 escort cell anterior escort cell 2020-01-15T10:28:33Z fly_anatomy.ontology aEC aIGS FBbt:00048535 Cell belonging to the anterior-most population of escort cells, adjacent to the cap cells (Eliazer et al., 2014). They display shorter and less elaborate extensions than other escort cells (Banisch et al., 2017) and respond to Hedgehog protein secreted from the cap cells to maintain the germline stem cells (Rojas-Rios et al., 2012). anterior inner germarial sheath cell anterior EC Can be distinguished from other escort cell subtypes based on expression of hh and Pdk1 and lack of GstS1 expression (Rust et al., 2020). IGS1