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Unveiling the mechanism behind sea urchin twinning

Using advanced microscopy and molecular biology, researchers visualized axis reconstruction in sea urchin embryos, tracking cellular movements and gene activation to understand self-organizing ability. This discovery sheds light on the long-standing question of monozygotic twinning emergence from one fertilized egg.

Shocking embryonic limbs into shape

Using electric shocks accelerates the formation of limb and tail buds in early chicken embryos. The study reveals that concentric rings within the blastula deform in a cascade-like process, inducing each ring to change shape.