Obstetrics & gynaecology

Freezing eggs to halt the biological clock

She is 44 and single, but journalist Sarah still dreams of having a child, while TV producer Susanah, 38, is waiting for her younger boyfriend to be ready.

Medical research

Radiant zinc fireworks reveal human egg quality

A stunning explosion of zinc fireworks occurs when a human egg is activated by a sperm enzyme, and the size of these "sparks" is a direct measure of the quality of the egg and its ability to develop into an embryo, according ...

Obstetrics & gynaecology

Researchers shed new light on egg freezing success rates

Researchers from New York Medical College and the University of California Davis have for the first time codified age-specific probabilities of live birth after in vitro fertilization (IVF) with frozen eggs. A team of researchers ...

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