Estrogen molecule pendant/keychain.

Can be used as a pendant on a necklace, keychain, earring, or whatever you find it useful for.

Buy: http://shpws.me/qHCr

Estrogens (AmE) or oestrogens (BE) are a group of compounds named for their importance in the estrous cycle of humans and other animals. They are the primary female sex hormones. Natural estrogens are steroid hormones, while some synthetic ones are non-steroidal. Their name comes from the Greek words estrus = sexual desire + gen = to generate. (from Wikipedia) Women only. Men see testosterone: http://shpws.me/qm4t

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