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64% will conceive ending in a live birth within four years. [38] Studies of couples trying to conceive have yielded better results: one 2004 study of 770 European women found that 82% of 35- to 39-year-old women conceived within a year, [39] while a study in 2013 of 2,820 Danish women saw 78% of 35- to 40-year-olds conceive within a year. [40]
Conception, an album by Miles Davis "Conception" (song), a 1950 jazz standard by George Shearing Conception, a posthumous album by Bill Evans; Conception (band), a Norwegian band
For individuals wanting to conceive very soon, they will need to use donor gametes. The donor gametes can be anonymous or known directed donors. These donors must undergo a mandated Food and Drug Administration (FDA) screenings which include questionnaires, physical examination, and sexually transmitted infection.
Fertilization was not understood in antiquity. Hippocrates believed that the embryo was the product of male semen and a female factor. Aristotle held that only male semen gave rise to an embryo, while the female only provided a place for the embryo to develop, [5] a concept he acquired from the preformationist Pythagoras.
At age 45, a woman starting to try to conceive will have no live birth in 50–80 percent of cases. [2] Menopause, or the cessation of menstrual periods, generally occurs in the 40s and 50s and marks the cessation of fertility, although age-related infertility can occur before then. [3]
Roget's Thesaurus is composed of six primary classes. [5] Each class is composed of multiple divisions and then sections. This may be conceptualized as a tree containing over a thousand branches for individual "meaning clusters" or semantically linked words.
Thesaurus Linguae Latinae. A modern english thesaurus. A thesaurus (pl.: thesauri or thesauruses), sometimes called a synonym dictionary or dictionary of synonyms, is a reference work which arranges words by their meanings (or in simpler terms, a book where one can find different words with similar meanings to other words), [1] [2] sometimes as a hierarchy of broader and narrower terms ...
Prevalence of infertility varies depending on the definition, i.e. on the time span involved in the failure to conceive. Infertility rates have increased by 4% since the 1980s, mostly from problems with fecundity due to an increase in age. [89] Fertility problems affect one in seven couples in the UK.