Search results for sperm concentrations:
Hope for men with nonobstructive infertility
8 hours ago |
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It has been thought that men with non-obstructive azoospermia (NOA), a lack of sperm in the semen not caused by an obstruction within the reproductive system, are poor candidates for IVF. Now, researchers writing in the open ...
Why females live longer than males: is it due to the father's sperm?
Dec 01, 2009 |
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Researchers in Japan have found that female mice produced by using genetic material from two mothers but no father live significantly longer than mice with the normal mix of maternal and paternal genes. Their findings provide ...
'The pill' for him: Scientists find a hormonal on-and-off switch for male fertility
Nov 30, 2009 |
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A new research report published in the December 2009 print issue of The FASEB Journal could one day give men similar type of control over their fertility that women have had since the 1960s. That's because scientists have f ...
Opposites attract: Monkeys choose mating partners with different genes
Nov 24, 2009 |
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The world's largest species of monkey 'chooses' mates with genes that are different from their own to guarantee healthy and strong offspring, according to a new research study.
Mexican labs target adulterers with DNA testing
Nov 20, 2009 |
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Suspect your significant other might be cheating on you? In Mexico, numerous laboratories are now offering a way to find out for sure -- DNA tests.
Modern Turkey: Modern Miracle
Nov 18, 2009 |
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(PhysOrg.com) -- Many of us will sit down with our families to a wonderful turkey dinner this Thanksgiving. But statistics increasingly show that Americans consider turkey a year-round staple.
Scientists Unravel Evolution of Highly Toxic Box Jellyfish
Nov 18, 2009 |
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(PhysOrg.com) -- With thousands of stinging cells that can emit deadly venom from tentacles that can reach ten feet in length, the 50 or so species of box jellyfish have long been of interest to scientists ...
Investigating muscle repair, scientists follow their noses
Nov 16, 2009 |
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When muscle cells need repair, they use odor-detecting tools found in the nose to start the process, researchers have discovered.
Chromosomes dance and pair up on the nuclear membrane (w/ Video)
Nov 13, 2009 |
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(PhysOrg.com) -- Meiosis - the pairing and recombination of chromosomes, followed by segregation of half to each egg or sperm cell - is a major crossroads in all organisms reproducing sexually. Yet, how the ...
A motley collection of boneworms (w/ Video)
Nov 10, 2009 |
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(PhysOrg.com) -- It sounds like a classic horror story -- eyeless, mouthless worms lurk in the dark, settling onto dead animals and sending out green "roots" to devour their bones. In fact, such worms do exist ...
Advance growing animal penile erectile tissue in lab may benefit patients
Nov 09, 2009 |
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In an advance that could one day enable surgeons to reconstruct and restore function to damaged or diseased penile tissue in humans, researchers at Wake Forest University Baptist Medical Center's Institute for Regenerative ...
For young boys with cancer, testicular tissue banking may be option to preserve fertility
Nov 09, 2009 |
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For parents of children with cancer, the hopeful news is that pediatric survival rates have steadily improved for decades. Among the bad news—treatments that enable survival often cause infertility.
Calm before the spawn: Climate change and coral spawning
Nov 04, 2009 |
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What's the point of setting up marine reserves to protect coral reefs from pollution, ship groundings and overfishing if climate change could cause far more damage? A study published this week in London in Proceedings of ...
New insights into Australia's unique platypus
Nov 02, 2009 |
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(PhysOrg.com) -- New insights into the biology of the platypus and echidna have been published, providing a collection of unique research data about the world's only monotremes.
Scientists turn stem cells into precursors for sperm, eggs
Oct 28, 2009 |
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Human embryonic stem cells derived from excess IVF embryos may help scientists unlock the mysteries of infertility for other couples struggling to conceive, according to new research from the Stanford University School of ...
