In vitro fertilisation (IVF): tubes containing frozen embryos in liquid nitrogen storage. In IVF,fertility drugs are given to potential mothers to stimulate the production of several ova,rather than the usual one. These are then harvested,usually by laparoscopy,and are fertilised in a petri dish,using a fresh or frozen sample of sperm. If fertilisation is successful,the embryos are incubated and then transferred back into the woman's uterus. 3-4 embryos are often introduced to increase the probability that one will implant. Any surplus embryos can be frozen and stored for possible future use. Photographed at the Institute Mutualiste Montsouris,Paris | |
Lizenzart: | Lizenzpflichtig |
Credit: | Science Photo Library / LOOK AT SCIENCES / EURELIOS / PATRICE LATRON |
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Modell-Rechte: | nicht erforderlich |
Eigentums-Rechte: | nicht erforderlich |
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