The spermatozoon has a flagellum, which is a tail-shaped structure that allows the cell to propel and move. In contrast, each egg cell, or ovum, is relatively large and non-motile. During ...

The fusion of sperm and egg marks the climax of fertilization ... it is truly capable of mediating cell-to-cell fusion. To determine the structure of an Fsx1 protein, Shunsuke Nishio of the ...

This is according to a new study led by researchers at Karolinska Institutet and published in the journal Cell ... egg. Now an international team of researchers has mapped in detail the structure ...