TERATOID TUMORS
\tˈɛɹətˌɔ͡ɪd tjˈuːməz], \tˈɛɹətˌɔɪd tjˈuːməz], \t_ˈɛ_ɹ_ə_t_ˌɔɪ_d t_j_ˈuː_m_ə_z]\
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A true neoplasm composed of a number of different types of tissue, none of which is native to the area in which it occurs. It is composed of tissues that are derived from three germinal layers, the endoderm, mesoderm, and ectoderm. They may be solid or cystic and are classified histologically as mature, immature, and malignant. (From Dorland, 27th ed & DeVita Jr et al., Cancer: Principles & Practice of Oncology, 3d ed, p1642)
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Word of the day
Quinones
- Hydrocarbon rings which contain two moieties position. They can be substituted in any position except at the ketone groups.