According to World Health Organization a total count of at least 39 million sperm per ejaculation is considered within the ...

Even though they are living, moving cells, why can't they become a single life form? —This is a question that touches on the ...

Stem cell-derived sperm have been a long-pursued goal. Now researchers have produced spermatogonia-like cells that resemble ...

Comparing sperm shapes reveals the evolution of living organisms — To start with the conclusion, the sperm of many animals ...

Researchers have decoded a long-standing mystery of how flowering plants ensure their sperm cells successfully reach the egg for fertilization, according to a recent study published in the journal ...

Once a sperm has broken through to an egg cell in order to fertilize it, the two cells need to hold together tightly. This occurs via a type of protein binding that is among the strongest in ...

A colony of human embryonic stem cells is seen on a computer monitor at the University of Wisconsin–MadisonDarren Hauck / Getty Researchers at Newcastle University in England report they have coaxed ...