Expression of ANXA1 protein. A) Epithelial adjacent margin. B) Oropharyngeal squamous cell carcinoma. Left: nuclei stained by DAPI (blue) to enable architectural definition. Right: same sections as in left, showing cytoplasmic ANXA1 expression (green). Note the lower expression of ANXA1 in B (right) compared to its stromal tissue and to normal epithelium in A (right). Magnification: 200x.