![](/files/02/66/56/f026656/public/2ef551086588a968abff1b9f23537cb8.gif) | Perimenopausal state, 214.
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![](/files/02/66/56/f026656/public/2ef551086588a968abff1b9f23537cb8.gif) | See also Menopause
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![](/files/02/66/56/f026656/public/2ef551086588a968abff1b9f23537cb8.gif) | Phallocentric ideas (of Galen), 45
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![](/files/02/66/56/f026656/public/2ef551086588a968abff1b9f23537cb8.gif) | Phallus, 47, 66
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![](/files/02/66/56/f026656/public/2ef551086588a968abff1b9f23537cb8.gif) | Pheromones: and ovulatory (menstrual) cycle, 50, 172, 173-74, 175
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![](/files/02/66/56/f026656/public/2ef551086588a968abff1b9f23537cb8.gif) | Phytoestrogens. See Estrogen
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![](/files/02/66/56/f026656/public/2ef551086588a968abff1b9f23537cb8.gif) | Pinker, Steven, 335, 336
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![](/files/02/66/56/f026656/public/2ef551086588a968abff1b9f23537cb8.gif) | Pitocin (synthetic oxytocin), 310, 311, 315
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![](/files/02/66/56/f026656/public/2ef551086588a968abff1b9f23537cb8.gif) | Pituitary gland, 149, 166
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![](/files/02/66/56/f026656/public/2ef551086588a968abff1b9f23537cb8.gif) | in ovulatory cycle, 166, 167, 169
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![](/files/02/66/56/f026656/public/2ef551086588a968abff1b9f23537cb8.gif) | during pregnancy, 92, 148
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![](/files/02/66/56/f026656/public/2ef551086588a968abff1b9f23537cb8.gif) | Placenta, 91, 92, 93, 94
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![](/files/02/66/56/f026656/public/2ef551086588a968abff1b9f23537cb8.gif) | breast as modified, 147, 154
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