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Biosynthetic pathway of steroid hormones in vertebrates. The relevant sex-steroids are in the squares with the red borders. Both males and females produce androgens and estrogens. The difference does no not reside in their types of sex steroids but in their titres in the blood. Females convert more testosterone into estradiol. Hence the testosterone titre is higher in males, while the opposite is true for estradiol. Modified after [45].
