Figure 1.

Representative histological areas from different mature ovarian teratomas that were selectively procured and genetically analyzed; the microdissected areas are surrounded by arrowheads. a–c: Areas of specific histological differentiation: a, sebaceous glands; b, cartilage; c, squamous epithelium. d–f: Areas with lymphoid tissue: d, lymphoid aggregate in gastrointestinal epithelium; e, lymphoid aggregate associated with respiratory epithelium; f, thymic tissue. g–i: Areas in which a few lymphocytes were admixed with various tissue elements: g, lymphocytes in squamous epithelium: h, lymphocytes associated with sebaceous gland; i, lymphocytes in neuroglial tissue.