SAA protein expression by IHC. IHC demonstrating SAA protein expression in cervical carcinomas. The sections were immunostained with monoclonal anti-SAA antibodies. The reddish-brown staining represents positive SAA protein signal; counterstaining is light blue. (a) Non neoplastic lesion cervical tissue. The tumoral epithelium stained moderate to strong and focal. (b, c) Adenocarcinoma. The stage I cervical squamous carcinoma tissues stained moderate and focal. (d) and diffuse (e).Stage II. Strong cytoplasmic SAA positivity was evident in the positive control (f) Liver. Original magnification x400 (a-f).