Figure 1
From: CK19 is a sensitive marker for yolk sac tumours of the testis
CK19-expression in normal testis and germ cell tumours of the testis. CK19 is not expressed in normal testis (A, x40), IGCNU (B, x40), seminoma (C, x100), and embryonic carcinoma (D, x100). In all cases the rete testis showed a strong cytoplasmic and membrane bound expression of CK19 (A-D). YST of the testis with microcystic pattern (E, HE staining x200) express CK19 (F, x100), Glypican-3 (G, x100), and AFP (H, x100).