Fig 1: Immunohistochemistry of GNEN-1 cells against (A) AZIN2 where nuclear staining and some cytoplasmic granules are seen. (B) REG4 shows membranous staining with the lack of nuclear staining is seen. (C) MATH1 with cytoplasmic staining with lack of nuclear staining is seen. (D) STC1 with granular cytoplasmic and lack of nuclear staining. In panels A, B, C, the scale bar represents 100 µm and in D 50 µm.