Scientists are exploring ways to mimic the origins of human life without two fundamental components: sperm and egg. They are coaxing clusters of stem cells – programmable cells that can transform into ...
Proceedings of the National Academy of Sciences of the United States of America, Vol. 119, No. 12 (March 22, 2022), pp. 1-10 (10 pages) ...
Frozen embryos are filling storage banks around the world. It's a struggle to know what to do with them. Lisa Holligan already had two children when she decided to try for another baby. Her first two ...
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