and a serpent's tail.] Some 200 medical charities have urged MPs to support legislation allowing the creation of animal-human embryos. In cytoplasmic hybrid embryos, all the DNA in the cell ...

The head-tail axis, for example, determines the orientation ... A new study using stem cell-based models has shed new light on how the human embryo begins to develop, which could one day benefit ...

During the oocyte-to-embryo transition (OET), the length of the mRNA poly(A) tail is closely linked to its translational efficiency. Regulation of the poly(A) tail is essential for selective ...

For example, in 1821, Geoffrey St. Hilaire was the first scientist to publish the observation that some bird embryos exhibited ... In the case of human beings, the presence of a tail is a striking ...