Laser micordissection of tumor from patients with malignant mixed germ cell tumor of the testis. Hematoxylin-eosin-stained sections showed mature teratoma (A), immature teratoma (D), embroynla carcinoma (G), yolk sac tumor (J), choriocarcinoma (M), and seminoma (P) before laser microdissection. Panels B, E, H, K, N, G, showed corresponding tumors after microdissection. Panels C, F, I, L, O, and R showed micordissected tissues ready for DNA analysis.