Polarised light micrograph of crystals of progesterone,a female sex hormone which is secreted monthly in the ovary and which stimulates development of the uterus to receive a fertilised egg and to nourish the embryo. In pregnancy,progesterone prevents menstruation and the release of more eggs; this characteristic of progesterone is the basis of the contraceptive pill: Magnification x40 at 35 mm | |
Licence : | Droits gérés |
Crédit: | Science Photo Library / Parker, David |
Taille de l’image : | 3543 px × 5157 px |
Model Release : | Non requis |
Property Release : | Non requis |
Restrictions : | - |