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The variation of gonadotropic and sex steroid hormones, and the subsequent changes in daily body temperature across the full menstrual cycle. During the pre-ovulatory FP, estrogen levels are high. During the post-ovulatory LP, increasing levels of circulating progesterone are observed, along with increased daily body temperature. FSH, follicle stimulating hormone; LH, luteinizing hormone; FP, follicular phase; LP, luteal phase. From [22], as adapted from [23].
