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41Major histocompatibility complex — The major histocompatibility complex (MHC) is a large genomic region or gene family found in most vertebrates that encodes MHC molecules. MHC molecules play an important role in the immune system and autoimmunity. Proteins are continually… …
42Sperm donation — is the provision (or ‘donation’) by a man, (known as a ‘sperm donor’), of his sperm, with the intention that it be used to impregnate a woman who is not usually the man s sexual partner, in order to produce a child. A sperm donor is the natural… …
43'Allo 'Allo! (series 7) — This article contains episode summaries for the seventh series of the British Sitcom series Allo Allo!. The series contains ten episodes which first aired between 5 January and 16 March 1991. There is a gap of fifteen months between the… …
44Luke Snyder and Noah Mayer — Luke and Noah (Van Hansis and Jake Silbermann) Luke Snyder and Noah Mayer are fictional characters and a supercouple from the American CBS daytime drama As the World Turns.[1] Luke wa …
45Menstrual cycle — See also: Menstruation and Menstruation (mammal) The menstrual cycle is the scientific term for the physiological changes that can occur in fertile women. This article focuses on the human menstrual cycle. The menstrual cycle, under the… …
46performing arts — arts or skills that require public performance, as acting, singing, or dancing. [1945 50] * * * ▪ 2009 Introduction Music Classical. The last vestiges of the Cold War seemed to thaw for a moment on Feb. 26, 2008, when the unfamiliar strains …
47Mitt Romney — Mitt Romney …
48Preimplantation genetic diagnosis — In medicine and (clinical) genetics preimplantation genetic diagnosis (PGD) (or also known as Embryo Screening) refers to procedures that are performed on embryos prior to implantation, sometimes even on oocytes prior to fertilization. PGD is… …
49Beauchamp–Sharp Tragedy — The Beauchamp Sharp Tragedy (sometimes called The Kentucky Tragedy) refers to the murder of Kentucky legislator Solomon P. Sharp by Jereboam O. Beauchamp. As a young lawyer, Beauchamp had been an admirer of Sharp s until the latter allegedly… …
50Spore (2008 video game) — Spore Spore box art (2008) Developer(s) Maxis Publisher(s) Electronic Arts …
