Sentences with phrase «viable sperm in»

The number of viable sperm in nonoxyl - 9 began at 40 % and dropped off in regular steps to 6 % by the end of the three days.

Not exact matches

If there is a problem in the genetic makeup of your sperm or eggs, assistive reproductive technologies, such as screening the embryo before implantation, can help you achieve a viable pregnancy.

«We had to find out if the last known male in China no longer produces viable sperm due to old age or an inability to inseminate the female,» said Dr. Gerald Kuchling, organizer of the artificial insemination effort and Rafetus breeding program leader for the TSA.

«The leap of faith is finding the viable sperm or oocytes [cells that become eggs],» says John Critser, scientific director of the Cryobiology Research Institute in Indianapolis.

The causes of infertility, which affects around 10 % of couples, are often unknown, but may in some cases result from the body's inability to produce viable gametes — also known as sperm and egg cells.

Could viable sperm be recovered from the Ice Man, the 5,000 - year - old mummy that had just been discovered in the Alps?

Until now, it has been assumed that all fertile sperms in one ejaculation from an animal are equally capable of engendering viable offspring.

In these organs, sperm can remain viable for weeks or months, or can be displaced by the sperm of a new suitor as the female remates.JOHN BELOTE, MOLLIE MANIER, AND SCOTT PITNICKVISUALIZING SPERM WARS Though it is difficult to see what goes on inside a female fruit fly after copulation, recent genetic advances have allowed scientists to image sperm competition inside storage organs — the seminal receptacle and spermathecae — of female Drosophila melanogasperm can remain viable for weeks or months, or can be displaced by the sperm of a new suitor as the female remates.JOHN BELOTE, MOLLIE MANIER, AND SCOTT PITNICKVISUALIZING SPERM WARS Though it is difficult to see what goes on inside a female fruit fly after copulation, recent genetic advances have allowed scientists to image sperm competition inside storage organs — the seminal receptacle and spermathecae — of female Drosophila melanogasperm of a new suitor as the female remates.JOHN BELOTE, MOLLIE MANIER, AND SCOTT PITNICKVISUALIZING SPERM WARS Though it is difficult to see what goes on inside a female fruit fly after copulation, recent genetic advances have allowed scientists to image sperm competition inside storage organs — the seminal receptacle and spermathecae — of female Drosophila melanogaSPERM WARS Though it is difficult to see what goes on inside a female fruit fly after copulation, recent genetic advances have allowed scientists to image sperm competition inside storage organs — the seminal receptacle and spermathecae — of female Drosophila melanogasperm competition inside storage organs — the seminal receptacle and spermathecae — of female Drosophila melanogaster.

In other animals, such as bats, sperm can remain viable for several months, swimming in place along the walls of the female's uteruIn other animals, such as bats, sperm can remain viable for several months, swimming in place along the walls of the female's uteruin place along the walls of the female's uterus.

The Science Media Centre has produced a summary that sheds some light on why many scientists are increasingly dismayed by Antinori's activities: 1993 A British millionairess (59) gave birth to twins boys after fertility treatment by Dr Antinori, who said «The rich women from England.it's a very good story» 1999 It was reported, to the undisguised scepticism of many fertility experts, that Antinori had found a way of had helping infertile men by taking sperm producing element out of human testes and implanting them in rat testes, so that the rats would produce viable human sperm.

«The sperm is only viable for a brief period of time, so most times the patient has to be already on his way to the hospital when he dies, or placed on life support, in order for this to even be possible,» says Dr. Mills.

Another concern: Sperm can live in your body for five days, and your egg can be viable for 24 hours.

Caffeine intake during pregnancy can also decrease the number of viable sperm a male child has later in life, the study notes.