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Figure 1 | BMC Pulmonary Medicine

Figure 1

From: Effects of sex hormones on bronchial reactivity during the menstrual cycle

Figure 1

Correlation between the provocative concentration of methacoline (PC 20 meth) required to obtain a reduction in FEV 1.0  ≥ 20% from the baseline value. On the x-axis: PC20meth values measured in the follicular phase; on the y-axis: PC20meth values measured in the luteal phase. About 30% of the women had lower PC20FEV1.0 values during the follicular phase (and vice versa). A logarithmic scale is used on both axes.

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