Figure 1.

Expression of CD3 in pancreatic ductal adenocarcinoma. Representative photomicrographs of CD3 stained lymphocytes in pancreatic ductal adenocarcinoma. a: Small number of CD3 lymphocytes in both tumour epithelium (red arrow head) and stroma. b: Small number of CD3 lymphocytes in tumour epithelium and moderate number of CD3 lymphocytes in stroma (red arrow head) of well differentiated papillary adenocarcinoma of the pancreas (G1). c: Moderate number of CD3 lymphocytes in tumour epithelium (red arrow head) and occasional lymphocytes in stroma (green arrow head) of moderately differentiated adenocarcinoma (G2 ). d: Occasional CD3 lymphocytes in tumour epithelium and small number of CD3 lymphocytes in stroma (red arrow head) red of poorly differentiated papillary adenocarcinoma (G3). Photomicrographs are at 5× magnification.