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 ...

Selfish elements preferentially attach to the “egg” side of the meiotic spindle, a structure of microtubules that pulls the chromosomes to opposite poles of the dividing cell. “While we had ...

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 ...