In vitro fertilisation (IVF): technician examining a trans-vaginal transfer catheter loaded with fertilised eggs ready for transfer into the mother's womb. 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 the husband's sperm. If fertilisation is successful,the embryos are incubated for up to 42 hours and then transferred back into the woman's uterus,using the catheter seen here. 3-4 embryos are often introduced to increase the probability that one will implant | |
Lizenzart: | Lizenzpflichtig |
Credit: | Science Photo Library / Morgan, Hank |
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