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Latest Semen Stories

2010-08-24 08:32:00

TORONTO, Aug. 24 /PRNewswire/ -- The new movie, "The Switch" starring Jennifer Aniston and Jason Bateman tells the tale of a 40-year-old woman who decides that she is tired of waiting to find Mr. Right in order to have a child. Instead, she wants to find the "right" sperm donor and have a baby on her own. (Logo: http://www.newscom.com/cgi-bin/prnh/20060208/NYWFNS1LOGO) (Logo: http://photos.prnewswire.com/prnh/20060208/NYWFNS1LOGO) Anticipating Friday's release of the film, online...

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2010-08-12 06:25:00

Obesity in younger men may lead to lower sperm count, a new study reported in the journal Fertility and Sterility suggests. The findings add to evidence that ties obesity to relatively poorer quality sperm. Several recent studies have found that compared with thinner males, obese men tend to have lower sperm counts, fewer rapidly mobile sperm and fewer progressively motile sperm, which refers to sperm that swim forward in straight lines rather than swimming about aimlessly. But age is also...

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2010-08-09 11:35:00

Researchers genetically engineer glow-in-the-dark sperm in fruit flies, revealing much more about sexual selection A lot has changed about the way scientists study sexual selection and reproduction. Some of it has to do with new tools; some of it has to do with new attitudes. There is a lot more going on than just "sperm meets egg." "It was simply thought of as "this army of sperm competing," so it functioned as a raffle; the more tickets you bought, the more sperm you transferred, the more...

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2010-08-04 14:12:29

In one of the first human studies of its kind, researchers have found that urinary concentrations of the controversial chemical Bisphenol A, or BPA, may be related to decreased sperm quality and sperm concentration. However, the researchers are quick to point out that these results are preliminary and more study is needed. Several studies have documented adverse effects of BPA on semen in rodents, but none are known to have reported similar relationships in humans. BPA is a common chemical...

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2010-07-16 10:55:15

What do a trout, sea anemone, rooster, fly and man have in common? Just as styles in sexy clothes or fashion change from year to year and culture to culture, "sexy" genes, or genes specific to sex, also change rapidly. But there is one sex-specific gene so vital, its function has remained unaltered throughout evolution and is found in almost all animals, according to new research from Northwestern University Feinberg School of Medicine. The gene, called Boule, is responsible for sperm...

2010-07-07 15:00:00

MIAMI, July 7 /PRNewswire/ -- With temperatures surpassing 100 degrees in many areas of the country, the heat is on everybody's mind...and people aren't only thinking of the blazing temperatures outdoors! According to a new survey commissioned by Grove Medical, the creators of Sensis Condoms with QuikStrips(TM), Americans think relationships, commitment and love fuel the heat in romantic relationships. The "Pulse of Passion" study found that when Americans think of passion, most...

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2010-06-30 09:51:42

Mothers who drink alcohol while they are pregnant may be damaging the fertility of their future sons, according to new research presented at the 26th annual meeting of the European Society of Human Reproduction and Embryology in Rome on Tuesday, June 29. Doctors in Denmark found that if mothers had drunk 4.5 or more drinks a week while pregnant, then the sperm concentration of their sons, measured about 20 years later, was a third lower in comparison to men who were not exposed to alcohol...

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2010-06-24 06:35:00

A woman's body could be instinctively selective about sperm, allowing some sperm to make it to the egg while killing off the chances of less suitable contenders, an Australian researcher said Wednesday. Professor Sarah Robertson, of the University of Adelaide, suggested that sperm contains "signaling molecules" that activate immunity changes in a woman's body so the sperm is accepted. However, some apparently healthy sperm have failed to activate these changes, leading Prof. Robertson to...

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2010-06-16 14:43:09

Inbred male sperm have been found to fertilize fewer eggs when in competition with non-inbred males according to a new study by the University of East Anglia. Research into the breeding habits of the red flour beetle, published June 15 in Proceedings of the Royal Society B, shows that the reduced fitness of inbred beetles, known as 'inbreeding depression', reveals itself in competitive scenarios. Inbreeding is a potentially important problem in declining species across the world, and...

2010-06-09 13:07:11

Researchers tested over 1,000 men 3 months after surgery Having to provide repeated semen samples following a vasectomy could soon be a thing of the past, after 96 per cent of men were given the all-clear based on a single test three months after surgery. Research from The Netherlands, published in the June issue of the urology journal BJUI, showed that 51 per cent of the 1,073 samples contained no sperm and a further 45 per cent contained less than 100,000 immotile sperm. No paternity was...


Latest Semen Reference Libraries

Prostate
2013-03-04 15:21:55

The male prostate gland acts as an exocrine gland in the male reproductive system. It is a firm, partly muscular, chestnut sized gland near the neck of the urethra in males. Formation and Orientation The prostate is usually formed within the ninth week of the embryonic stage in reproductive development. The prostate can be separated into either “lobes” or “zones”. When looking at a prostate divided into zones, there are four distinct regions. The first zone is the Peripheral...

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