Fig 1: Immunofluorescence staining of MARS and AIMP2-DX2 in cancerous and benign cells. (A,B) Adenocarcinoma cases exhibiting intense cytoplasmic MARS and AIMP2-DX2 IF staining; (C) A Squamous cell carcinoma case evidencing intense cytoplasmic MARS and AIMP2-DX2 IF staining; (D) Benign cells exhibiting no or weak MARS and AIMP2-DX2 IF staining. DAPI: nuclear staining with 4',6-diamidino-2-phenylindole; MARS: MARS IF staining; DX2: AIMP2-DX2 IF staining; Merge: combined images of MARS, AIMP2-DX2, and DAPI staining. Scale bar, 20 µm.