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Baby

Health

UK’s first three-parent babies likely to be conceived in 2017

The approach might not always work but it should be safer than existing methods for preventing harmful and sometimes fatal mitochondrial diseases

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A model of the human gut

Health

Gut tissue wired up with nerves created in lab for first time

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Using egg leftovers could double the number collected in IVF

Health

Using egg leftovers could double the number collected in IVF

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An eight-day-old human embryo

Life

Eggs made from skin cells in lab could herald end of infertility

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Four sheep that were cloned from the same animal as Dolly

Life

Dolly the sheep’s poor health may not have been due to cloning

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Two people in wheelchairs are silhouetted against a window

Health

Stem cell brain injections let people walk again after stroke

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Joe Biden and Pope Francis surrounded by men

Health

Our audience with the Pope revealed how glitz funds medicine

Insight

Dolly

Life

The clone that changed my life: 20 years after Dolly the sheep

Features

Human embryo at the 4 cell stage

Health

Embryo cells decide their future only two days after conception

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A haploid cell with 23 chromosomes (left), and a diploid cell with 46 chromosomes (right).

Life

Human stem cell with half a genome could help infertile couples

The breakthrough could produce new cancer therapies, aid infertility and help us to understand why we reproduce sexually

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Life

Urine from premature babies could repair damaged kidneys

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Health

First fully approved 'off the shelf' stem cells launch in Japan

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Earth

Inside the cloning factory that creates 500 new animals a day

Analysis

Health

World's first trial of stem cell therapy in the womb

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