Medical research

Lab-grown human 'embryos' offer new research hope

Scientists have developed human embryo-like structures without using sperm, an egg or fertilization, offering hope for research on miscarriage and birth defects but also raising fresh ethical concerns.

Medical research

Developmentally arrested IVF embryos can be coaxed to divide

Why do two-thirds of in vitro fertilization (IVF) embryos go into developmental arrest? A new study publishing June 30th in the open-access journal PLOS Biology by Andrew Hutchins of Southern University of Science and Technology ...

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