But the test is so sensitive that male cells in the air can mistakenly indicate that a woman is a man.

Just register for free and a whole world of male reproductive cells is yours for the asking.

She was cloned so she did not need any male cells to fertilize the egg and mature it.

Worms are hermaphrodite, which means they have both male and female reproductive cells.

In most animal species the weight of authority distinctly favors placing the whole responsibility upon the male cell.

According to recent evidence, there are two kinds of male germinal cells; one kind giving rise to female offspring and the other to male.

Many advantages would follow if it too could grow tall, but this would require a new technique for getting the male cell to the female.