SST1 and SST2 expression in OC explants. A, D, phalloiding staining (green) of OC explants. B, E, immunoreactivity of both SST1 and SST2 (red) was stronger in inner than in outer HCs of OC (arrow). C, F, Respective combined images of phalloidin (green) with SST1 and SST2 (red) confirm that the inner and outer HCs in cultivated OC express SST1 and SST2. Images by immunofluorescence microscopy; scale bar = 50 μm.