expresses GstS1 santa-maria escort cell posterior escort cell 2020-01-15T11:25:50Z pEC IGS4 Cell belonging to the posterior-most population of escort cells, adjacent to the follicle stem cells (Eliazer et al., 2014). They have longer and more stable extensions than other escort cells and often fully engulf neighboring germline cysts (Banisch et al., 2017). With the central escort cells, they form a differentiation compartment for germline cysts (Banisch et al., 2017). pIGS posterior inner germarial sheath cell Can be distinguished from other escort cell subtypes based on expression of GstS1 and santa-maria, and lack of hh and Pdk1 expression (Rust et al., 2020). fly_anatomy.ontology FBbt:00048537 posterior EC