Pregnancy, also known as gestation, is the time during which one or more offspring develops inside a woman. A multiple pregnancy involves more than one offspring, such as with twins. Pregnancy usually occurs by sexual intercourse, but can…

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Premature Ovarian Failure

Premature Ovarian Failure aka Early Menopause will occur in 1 in 1,000 women between the ages of 15 and 29 and 1 in 100 women between the ages of 30 and 39. The average age…

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Prenatal Development

In human pregnancy, prenatal development is also called antenatal development. The development of the human embryo follows fertilisation, and continues as fetal development. By the end of the tenth week of gestational age the embryo…

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Progesterone (P4) is an endogenous steroid and progestogen sex hormone involved in the menstrual cycle, pregnancy, and embryogenesis of humans and other species.

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