Obstetrics & gynaecology

Only 21% of women who use their frozen eggs become mothers

As the trend for older motherhood continues, amid warnings from experts about the sharp decline in a woman's fertility in her mid-30s, more and more women are considering egg freezing as a form of "insurance" against age-related ...

Medical research

3-D images show how sperm binds to the egg surface

Researchers at Karolinska Institutet in Sweden have obtained the first 3D snapshots of a sperm protein attached to a complementary egg coat protein at the beginning of fertilisation. The study, which reveals a common egg ...

Obstetrics & gynaecology

Human reproduction likely to be more efficient than previously thought

How difficult is it to conceive? According to a widely-held view, fewer than one in three embryos make it to term, but a new study from a researcher at the University of Cambridge suggests that human embryos are not as susceptible ...

Obstetrics & gynaecology

Dutch medical centre probes suspected IVF sperm mix-up

A Dutch medical institution announced an investigation Tuesday after discovering that up to 26 women may have been fertilised by the wrong sperm cells at its IVF treatment laboratory.

Genetics

Key dates in embryonic research

Britain's House of Commons votes Tuesday on allowing the use of donated DNA to create so-called "three-parent" babies to overcome mitochondrial diseases—disorders handed down along the maternal line.

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Fertilisation

Fertilisation (also known as conception, fecundation and syngamy), is the fusion of gametes to produce a new organism. In animals, the process involves a sperm fusing with an ovum, which eventually leads to the development of an embryo. Depending on the animal species, the process can occur within the body of the female in internal fertilisation, or outside in the case of external fertilisation.

The entire process of development of new individuals is called procreation, the act of species reproduction.

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