| 31. | If discharge is red or pink, it indicates that menstruation continues.
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| 32. | Patterns of menstruation are examined since irregular patterns may appear with hirsutism.
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| 33. | This system comes from the superstition of impurity during the menstruation period.
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| 34. | In medieval times, costmary was used for menstruation problems.
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| 35. | :It's similar to menstruation in certain mammals.
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| 36. | Phenomena such as menstruation and menopause were regarded with fear and disgust.
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| 37. | If implantation does not occur, it is sloughed off during menstruation.
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| 38. | The age of onset of menstruation has been dropping steadily.
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| 39. | Do more mammals go through estrous or go through menstruation?
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| 40. | Menstruation products cause millions of tons of waste each year.
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