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Asymmetry is born at the beginning of life
Wilson(42865) Published on Wednesday, May 15, 2024 at 23:52Share on Sina Weibo People from the mysterious world
Life is asymmetric.Although the human five senses and four limbs look roughly symmetrical, the organs are arranged asymmetrically, such as the heart on the left and the liver on the right.If it goes deep into cells and even smaller molecules, asymmetry is almost an "iron rule": DNA spirals to the right, and proteins and other molecules are "chiral".A study published in the journal Cell found that asymmetry plays an important role in human embryonic development.This finding may help to improve the success rate of in vitro fertilization (IVF).The two cells formed at the beginning of the division of the fertilized egg have different destinies - one of them and their offspring will form an Inner Cell Mass (ICM) and eventually develop into a fetus, while the other will form a trophectoderm (TE) and eventually develop into a placenta and some embryonic tissues. https://www.cell.com/cell/fulltext/S0092-8674(24)00455-0 https://www.thepaper.cn/newsDetail_forward_27375954
