Fig. 1

Immunohistochemical detection of βcatenin expression in testicular germ cell tumours. a Yolk sac tumour showed constant strong membranous βcatenin positivity (brown colour); b Embryonal carcinoma with constant moderate membranous βcatenin positivity; c Embryonal carcinoma with focal week membranous βcatenin positivity; d Teratoma with constant strong membranous βcatenin positivity in epithelial cells and negativity (blue colour) in mesenchymal cells. e Seminoma βcatenin negative. Original magnification ×40/× 400