Figure 2
From: An immunohistochemical study of TIMP-3 expression in oesophageal squamous cell carcinoma

Representative photomicrographs of tissue sections immunostained for TIMP-3 (× 50). Black arrowheads indicate deep areas of tumour invasion. Cancer cells from these areas did not express TIMP-3 protein. White arrowheads indicate shallow areas of tumour, where cancer cells expressed TIMP-3 protein.