POU2AF1 and PROM1 have been proposed as possible markers.

Sperm that sit around in the body for a week or more start to develop abnormalities that make them less effective at head banging their way into the egg.

Testicular pain is reported in up to one fifth of cases.

The first is that of chemotaxis which directs the movement of the sperm towards the ovum.

Theodoor van de Velde was something of a semen connoisseur.

But he wrote in this book, Ideal Marriage he said that he could differentiate between the semen of a young man, which he said had a fresh, exhilarating smell, and the semen of mature men, whose semen smelled quote, Remarkably like that of the flowers of the Spanish chestnut.

Marriage manual author and semen sniffer Theodoor van de Velde has a line in his book.

One fine day Alfred Kinsey decided to calculate the average distance traveled by ejaculated semen.

One set of chromosomes came from the nucleus of the ovum and the second set from the nucleus of the sperm.

It is the sperm in the semen that are of importance, and therefore semen quality involves both sperm quantity and quality.

The husband's consent has to set out whether he agrees to artificial insemination of his wife with his sperm even after his death.

According to 1930s marriage manual author, Theodoor van de Velde, a slight seminal odor can be detected on the breath of a woman within about an hour after sexual intercourse.

In the event of artificial insemination of a woman with the sperm of a man who had not granted his consent thereto or had declared his consent void, the issue of the child's filiation will be settled pursuant to the provisions of the Family Law Act.

Doctor Kinsey had heard and there was a theory kind of going around at the time, this being the 1940s that the force with which semen is thrown against the cervix was a factor in fertility.

In vitro fertilization (IVF) is the process in which a mature ovum is surgically removed from a women's ovary, placed in a medium with sperm until fertilization occurs and then placed in the women's uterus.

And of course, we don't do these experiments in humans, but just by coincidence, my colleague has shown that men who have low sperm count, low semen quality have significantly more atrazine in their urine.

In the 1900s, early 1900s gynecologists, a lot of gynecologists believed that when a woman has an orgasm the contractions serve to suck the semen up through the cervix and sort of deliver it really quickly to the egg, thereby upping the odds of conception.