Female sex hormone. Polarised light micrograph of crystals of beta- Estradiol. This is the most potent of the six naturally-occurring estrogens,the class of hormones associated with the development of female reproductive structures and secondary sex characteristics. Beta-Estradiol is secreted by the ovaries,and is the major controlling hormone in the regulation of the menstrual cycle. It is formed by enzyme-catalysed synthesis from pregnenolone. Magnification: x10 at 35mm size | |
Lizenzart: | Lizenzpflichtig |
Credit: | Science Photo Library / Moulds, Sidney |
Bildgröße: | 3366 px × 5082 px |
Modell-Rechte: | nicht erforderlich |
Eigentums-Rechte: | nicht erforderlich |
Restrictions: | - |