Related topics: testosterone · brain · breast cancer · estrogen

Hormone clue to snail shells' spiral

An enzyme that makes the male sex hormones has unravelled a fresh clue about how snail shells come to be curly. 

When anemones bleach, clownfish suffer

Coral bleaching is a well-known consequence of climate change. What is less widely known is that sea anemones suffer the same fate, and this reduces the fertility of clownfish living in these anemones, as researchers from ...

How testosterone regulates singing in canaries

Testosterone controls specific features of birdsong in two distinct regions of the canary brain that resemble the human motor cortex, according to a study published in The Journal of Neuroscience. The research points to a ...

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Sex steroid

Sex steroids, aka gonadal steroids, are steroid hormones that interact with vertebrate androgen or estrogen receptors. Their effects are mediated by slow genomic mechanisms through nuclear receptors as well as by fast nongenomic mechanisms through membrane-associated receptors and signaling cascades. The term sex hormone is nearly always synonymous with sex steroid.

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